metric fasteners - kanebridge313 metric - phillips flat heads forself-tappingscrews iso 7050 nominal...

310

Metric Fasteners

All dimensions listed in this section are given in millimeters (mm) unless otherwise noted.

DIN/ISOCross Reference Chart ......................................... 311

Self Tapping ScrewsOval Head, Phillips & Slotted .............................. 312Flat Head, Phillips & Slotted ............................... 313Pan Head, Phillips & Slotted................................ 314Indented Hex Head............................................... 315Gimlet Point (Type C) .......................................... 316Blunt Point (Type F) ............................................ 317Trilobular Thread Rolling ............................ 318-320

Machine ScrewsFlat Head, Phillips & Slotted ............................... 321Oval Head, Phillips & Slotted .............................. 322Pan Head, Phillips & Slotted................................ 323Thread Dimensions, Class 6g............................... 324Mech. & Perform. Requirements, Class 4.8 ........ 324

Cap Screws & BoltsHex Bolt, Partial Thread, Grades A & B .............. 326Hex Bolt, Partial Thread Class 8.8 & 10.9 ........... 327Hex Cap Screw, Full Thread, Grades A & B ....... 328Hex Cap Screw, Full Thread, Class 8.8 & 10.9 ... 329Carriage Bolt, Square Neck, Large ...................... 330Carriage Bolt, Short Neck .................................... 331

NutsHex, Style 1 Dimensions ...................................... 332Hex, Style 1, Class 6 ............................................ 332Hex, Style 1, Class 8 & 10 ................................... 333Hex, Style 2, Class 9 ............................................ 334Hex, Style 2, Class 12 .......................................... 335Hex Jam, Class 04 ................................................ 336

Nuts (continued)K-Lock, Class 8 ................................................... 337Nylon Insert Lock, Regular Pattern ..................... 338Nylon Insert Lock, Heavy Pattern ........................ 339Nylon Insert Lock, Regular Pattern, DIN 985 ..... 340Hex Flange ........................................................... 341Malleable Cast Wing ............................................ 342Cold Forged Wing, Class 5 .................................. 343Domed Cap, Class 6 ............................................. 344Internal Thread Dimensions, Class 6H ................ 345

WashersStandard Flat, Grade A ......................................... 346Flat, Wider I.D., Grade C ..................................... 347Flat Larger O.D., Grade A & C ............................ 348Flat, Small O.D., Grade A .................................... 349External Tooth Lock ............................................. 350Internal Tooth Lock .............................................. 351Countersunk External Tooth Lock ....................... 352External-Internal Tooth Lock ............................... 353Regular Split Lock ............................................... 354Curved Spring Lock ............................................. 355

Socket ProductsSocket Head Cap Screw ....................................... 356Flat Head Socket Cap Screw ................................ 357Socket Set Screw, Cone Point .............................. 358Socket Set Screw, Flat Point ................................ 359Socket Set Screw, Cup Point ................................ 360Socket Set Screw, Dog Point ................................ 361Socket Shoulder Screw ................................ 362-363Button Head Socket Cap Screw ........................... 364Thread Dimensions, Class 5g/6g ......................... 365

311

Metric FastenersDIN/ ISOCross-Reference

DIN ISO JIS CategoryStandard Standard Standard Description

13 68 Internal Threads, Class 6H13 898-1 External Threads, Class 6g13 R1501 Internal Threads, Class 6H84 1207 Machine Screws, Slotted Cheese Head85 1580 Machine Screws, Slotted Pan Head

125A 7089 Flat Washers, Standard126 7091 Flat Washers, Wider I.D.

127B Split Lockwashers128 Curved Spring Lockwashers267 4759/1 Tolerance Values for Metric Fasteners315 Malleable Cast Wing Nuts

439B 4035 Hex Jam Nuts433 7092 Flat Washers, Small O.D.603 8677 B1171 Carriage Bolts, Regular Square Neck603 8678 B1171 Carriage Bolts, Short Neck912 4762 Socket Head Cap Screws913 4026 Socket Set Screws-Flat Point914 4027 Socket Set Screws-Cone Point915 4028 Socket Set Screws-Dog Point916 4029 Socket Set Screws-Cup Point931 4014 Hex Bolts, Partial Thread933 4017 Hex Cap Screws, Full Thread934 4032 Hex Nuts, Style 1, Class 6, 8 (some sizes), 10 (some sizes)

934K K-Lock Nuts, Class 8963 2009 Machine Screws, Slotted Flat Head964 2010 Machine Screws, Slotted Oval Head965 7046 Machine Screws, Phillips Flat Head966 7047 Machine Screws, Phillips Oval Head970 4032 Hex Nuts, Style 1, Classes 6, 8 & 10982 7041 Nylon Insert Lock Nuts, Heavy Pattern, Class 8985 7040 Nylon Insert Lock Nuts, Regular Pattern, Class 8

1587 Domed Hex Cap Nuts, Class 63155 Cold Formed Wing Nuts, Class 5

6797A B1255 External Tooth Lockwashers6797J B1255 Internal Tooth Lockwashers6798V B1255 Countersunk External Tooth Lockwashers6999D B1255 Combination External-Internal Tooth Lockwashers7971B 1481 Slotted Tapping Screws-Pan Head7972B 1482 Slotted Tapping Screws-Flat Head7973B 1483 Slotted Tapping Screws-Oval Head7976B 1479 Slotted Tapping Screws-Hex Head7981B 7049 Phillips Tapping Screws-Pan Head7982B 7050 Phillips Tapping Screws-Flat Head7983B 7051 Phillips Tapping Screws-Oval Head

7985 7045 Machine Screws, Phillips Cheese Head7991 Flat Socket Cap Screws9021 7093 Flat Washers, Large O.D.

312

METRIC - PHILLIPS OVAL HEADS FOR SELF-TAPPING SCREWS ISO 7051

NominalDiameter

ThreadPitch

A H F K M G

PhillipsDriver Size

Distance fromunderside of headto 1st major diam

of thread

Head DiameterRaisedHead

Height

Head SideHeight

RecessDiameter

Recess Penetration

Max Max Min Nom Max Ref Max Min

ST 2.2 0.8 0.8 3.8 3.5 0.5 1.1 2.2 1.5 1.2 0

ST 2.9 1.1 1.1 5.5 5.2 0.7 1.7 3.4 2.2 1.8 1

ST 3.5 1.3 1.3 7.3 6.9 0.8 2.35 4.8 2.75 2.25 2

ST 4.2 1.4 1.4 8.4 8 1 2.6 5.2 3.2 2.7 2

ST 4.8 1.6 1.6 9.3 8.9 1.2 2.8 5.4 3.4 2.9 2

ST 5.5 1.8 1.8 10.3 9.9 1.3 3 6.7 3.45 2.95 3

ST 6.3 1.8 1.8 11.3 10.9 1.4 3.15 7.3 4 3.5 3

ST 8 2.1 2.1 15.8 15.4 2 4.65 9.6 5.25 4.75 4

ST 9.5 2.1 2.1 18.3 17.8 2.3 5.25 10.4 6 5.5 4

METRIC - SLOTTED OVAL HEADS FOR SELF-TAPPING SCREWS ISO 1483

NominalDiameter

ThreadPitch

A H K F N T

Distance fromunderside of

head to 1st majordiam of thread

Head DiameterHeadSide

Height

Height ofOval

SectionSlot Width Slot Depth

Max Max Min Max Nom Max Min Max Min

ST 2.2 0.8 0.8 3.8 3.5 1.1 0.5 0.7 0.56 1 0.8

ST 2.9 1.1 1.1 5.5 5.2 1.7 0.7 1 0.86 1.45 1.2

ST 3.5 1.3 1.3 7.3 6.9 2.35 0.8 1.2 1.06 1.7 1.4

ST 4.2 1.4 1.4 8.4 8 2.6 1 1.51 1.26 1.9 1.6

ST 4.8 1.6 1.6 9.3 8.9 2.8 1.2 1.51 1.26 2.4 2

ST 5.5 1.8 1.8 10.3 9.9 3 1.3 1.91 1.66 2.6 2.2

ST 6.3 1.8 1.8 11.3 10.9 3.15 1.4 1.91 1.66 2.8 2.4

ST 8 2.1 2.1 15.8 15.4 4.65 2 2.31 2.06 3.7 3.2

ST 9.5 2.1 2.1 18.3 17.8 5.25 2.3 2.81 2.56 4.4 3.8

Oval HeadSelf-Tapping Screws METRIC

F N

KT

90o

±2M

G

H

AA

F

K

H

Slotted Phillips

313

METRIC - PHILLIPS FLAT HEADS FOR SELF-TAPPING SCREWS ISO 7050

NominalDiameter

ThreadPitch

A H K M G

PhillipsDriver Size



Head DiameterHead

HeightRecess

DiameterRecess Penetration

Max Max Min Max Ref Max Min

ST 2.2 0.8 0.8 3.8 3.5 1.1 1.9 1.2 0.9 0

ST 2.9 1.1 1.1 5.5 5.2 1.7 3.2 2.1 1.7 1

ST 3.5 1.3 1.3 7.3 6.9 2.35 4.4 2.4 1.9 2

ST 4.2 1.4 1.4 8.4 8 2.6 4.6 2.6 2.1 2

ST 4.8 1.6 1.6 9.3 8.9 2.8 5.2 3.2 2.7 2

ST 5.5 1.8 1.8 10.3 9.9 3 6.6 3.3 2.8 3

ST 6.3 1.8 1.8 11.3 10.9 3.15 6.8 3.5 3 3

ST 8 2.1 2.1 15.8 15.4 4.65 8.9 4.6 4 4

ST 9.5 2.1 2.1 18.3 17.8 5.25 10 5.7 5.1 4

METRIC - SLOTTED FLAT HEADS FOR SELF-TAPPING SCREWS ISO 1482

NominalDiameter

ThreadPitch

A H K N T



Head DiameterHead

HeightSlot Width Slot Depth

Max Max Min Max Max Min Max Min

ST 2.2 0.8 0.8 4.4 3.8 1.1 0.7 0.56 0.6 0.4

ST 2.9 1.1 1.1 6.3 5.5 1.7 1 0.86 0.85 0.6

ST 3.5 1.3 1.3 8.2 7.3 2.35 1.2 1.06 1.2 0.9

ST 4.2 1.4 1.4 9.4 8.4 2.6 1.51 1.26 1.3 1

ST 4.8 1.6 1.6 10.4 9.3 2.8 1.51 1.26 1.4 1.1

ST 5.5 1.8 1.8 11.5 10.3 3 1.91 1.66 1.5 1.1

ST 6.3 1.8 1.8 12.6 11.3 3.15 1.91 1.66 1.6 1.2

ST 8 2.1 2.1 17.3 15.8 4.65 2.31 2.06 2.3 1.8

ST 9.5 2.1 2.1 20 18.3 5.25 2.81 2.56 2.6 2

Flat Head Self - Tapping ScrewsMETRIC

T

90o

±2

K

NMH

K

Slotted Phillips

A

H

A

G

314

Pan HeadsMETRICSelf-Tapping Screws

METRIC - PHILLIPS PAN HEADS FOR SELF-TAPPING SCREWS ISO 7049

NominalDiameter

ThreadPitch

A H K M G

PhillipsDriver Size


of thread

Head Diameter Head HeightRecess


Max Max Min Max Min Ref Max Min

ST 2.2 0.8 0.8 4 3.7 1.6 1.4 1.9 1.2 0.85 0

ST 2.9 1.1 1.1 5.6 5.3 2.4 2.15 3 1.8 1.4 1

ST 3.5 1.3 1.3 7 6.64 2.6 2.35 3.9 1.9 1.4 2

ST 4.2 1.4 1.4 8 7.64 3.1 2.8 4.4 2.4 1.9 2

ST 4.8 1.6 1.6 9.5 9.14 3.7 3.4 4.9 2.9 2.4 2

ST 5.5 1.8 1.8 11 10.57 4 3.7 6.4 3.1 2.6 3

ST 6.3 1.8 1.8 12 11.57 4.6 4.3 6.9 3.6 3.1 3

ST 8 2.1 2.1 16 15.57 6 5.6 9 4.7 4.15 4

ST 9.5 2.1 2.1 20 19.48 7.5 7.1 10.1 5.8 5.2 4

METRIC - SLOTTED PAN HEADS FOR SELF-TAPPING SCREWS ISO 1481

NominalDiameter

ThreadPitch

A H K N T W


of thread

Head Diameter Head Height Slot Width Slot DepthHead Height

to Slot

Max Max Min Max Min Max Min Min Min

ST 2.2 0.8 0.8 4 3.7 1.3 1.1 0.7 0.56 0.5 0.5

ST 2.9 1.1 1.1 5.6 5.3 1.8 1.6 1 0.86 0.7 0.7

ST 3.5 1.3 1.3 7 6.6 2.1 1.9 1.2 1.06 0.8 0.8

ST 4.2 1.4 1.4 8 7.6 2.4 2.2 1.51 1.26 1 0.9

ST 4.8 1.6 1.6 9.5 9.1 3 2.7 1.51 1.26 1.2 1.2

ST 5.5 1.8 1.8 11 10.6 3.2 2.9 1.91 1.66 1.3 1.3

ST 6.3 1.8 1.8 12 11.6 3.6 3.3 1.91 1.66 1.4 1.4

ST 8 2.1 2.1 16 15.6 4.8 4.5 2.31 2.06 1.9 1.9

ST 9.5 2.1 2.1 20 19.5 6 5.7 2.81 2.56 2.4 2.4

K

K

N

T G

H M H

AAW

Slotted Phillips

315

Indented Hex Heads Self- Tapping ScrewsMETRIC

METRIC - INDENTED HEX HEADS FOR SELF-TAPPING SCREWS ISO 1479

NominalDiameter

ThreadPitch

A H K W C

Distance fromunderside of head to

1st major diam ofthread

Total Head HeightHead Height

to IndentWidth Across the Flats

Width Acrossthe Corners

Max Max Min Min Max Min Min

ST 2.2 0.8 0.8 1.6 1.3 0.9 3.2 3.02 3.38

ST 2.9 1.1 1.1 2.3 2 1.4 5 4.82 5.4

ST 3.5 1.3 1.3 2.6 2.3 1.6 5.5 5.32 5.96

ST 4.2 1.4 1.4 3 2.6 1.8 7 6.78 7.59

ST 4.8 1.6 1.6 3.8 3.3 2.3 8 7.78 8.71

ST 5.5 1.8 1.8 4.1 3.6 2.5 8 7.78 8.71

ST 6.3 1.8 1.8 4.7 4.1 2.9 10 9.78 10.95

ST 8 2.1 2.1 6 5.2 3.6 13 12.73 14.26

ST 9.5 2.1 2.1 7.5 6.5 4.5 16 15.73 17.62

W

C

H

K A

See page 307 for a crossreference of DIN standards

to ISO standards.

316

METRICSelf-Tapping Screws Gimlet Point(Type C)

Description A thread forming, tapping screw with spaced threads and a tapered, gimlet point.

Applications/Advantages

For self starting in thin metal or resin-filled plywood.

Material Cold heading, case hardening quality steel

Surface Hardness Vickers HV 450 minimum

Case Depth

Diameters 2.2 thru 2.6: 0.04 - 0.10Diameters 2.9 thru 3.5: 0.05 - 0.18Diameters 3.9 thru 5.5: 0.10 - 0.23Diameters 6.3 thru 8: 0.15 - 0.28

Core Hardness Diameters 2.2 thru 3.9: 270 HV 5 - 390 HV 5Diameters 4.2 and greater: 270 HV 10 - 390 HV 10

Plating See Appendix-A for plating information.

L

D d

Y

METRIC - THREADS FOR SELF TAPPING SCREWS, GIMLET POINT (TYPE C) ISO 1478, 2702 &4759-1; JIS B 1007

Nominal Size Thread Pitch

D d Y

Minimum TorsionalStrength

(N m)Major Diameter Minor Diameter

Length ofIncomplete

Thread

Max Min Max Min Max

ST2.2 0.8 2.24 2.1 1.63 1.52 2 0.45

ST2.9 1.1 2.90 2.76 2.18 2.08 2.6 1.5

ST3.5 1.3 3.53 3.35 2.64 2.51 3.2 2.7

ST4.2 1.4 4.22 4.04 3.10 2.95 3.7 4.4

ST4.8 1.6 4.80 4.62 3.58 3.43 4.3 6.3

ST5.5 1.8 5.46 5.28 4.17 3.99 5 10

ST6.3 1.8 6.25 6.03 4.88 4.70 6 13.6

ST8 2.1 8 7.78 6.20 5.99 7.5 30.5

ST9.5 2.1 9.65 9.43 7.85 7.59 8 -

Tolerance on Length Up to 25mm, incl.: ±0.8 Over 25mm: ±1.3

317

Self- Tapping ScrewsMETRICBlunt Point(Type F)

Description A thread forming, tapping screw with spaced threads and a blunt point with incomplete entering threads.


For molded or through holes in thin metal, non-ferrous castings, plastics or resin-filled plywood.

Material Cold heading, case hardening quality steel

Surface Hardness Vickers HV 450 minimum

Case Depth

Diameters 2.2 thru 2.6: 0.04 - 0.10Diameters 2.9 thru 3.5: 0.05 - 0.18Diameters 3.9 thru 5.5: 0.10 - 0.23Diameters 6.3 thru 8: 0.15 - 0.28

Core Hardness Diameters 2.2 thru 3.9: 270 HV 5 - 390 HV 5Diameters 4.2 and greater: 270 HV 10 - 390 HV 10

Plating See Appendix-A for plating information.

D d

Y

L

METRIC - THREADS FOR SELF TAPPING SCREWS, BLUNT POINT (TYPE F) ISO 1478, 2702 &4759-1; JIS B 1007

Nominal SizeThreadPitch

D d Y

MinimumTorsional Strength

(N m)Major Diameter Minor Diameter

Length ofIncomplete

Thread

Max Min Max Min Ref

ST2.2 0.8 2.24 2.1 1.63 1.52 1.6 0.45

ST2.9 1.1 2.90 2.76 2.18 2.08 2.1 1.5

ST3.5 1.3 3.53 3.35 2.64 2.51 2.5 2.7

ST4.2 1.4 4.22 4.04 3.10 2.95 2.8 4.4

ST4.8 1.6 4.80 4.62 3.58 3.43 3.2 6.3

ST5.5 1.8 5.46 5.28 4.17 3.99 3.6 10

ST6.3 1.8 6.25 6.03 4.88 4.70 3.6 13.6

ST8 2.1 8 7.78 6.20 5.99 4.2 30.5

ST9.5 2.1 9.65 9.43 7.85 7.59 4.2 -

Tolerance on Length Up to 19mm, incl.: -0.8 Over 19mm to 38mm, incl.: -1.3 over 38mm: -1.5

318

METRICSelf-Tapping Screws Trilobular ThreadRolling Screws

METRIC - TRILOBULAR THREAD ROLLING SCREWS DIN 7500-1

NominalSize &ThreadPitch

C B P

Test PlateThickness

HoleDiameter

MinimumBrakingTorque

MinimumBreaking

Force

MaximumRollingTorque

Diameter ofCircumscribing Circle Major Thread Diameter

PointDiameter

Max Min Max Min Max Nm N Nm

M2.5-0.45 2.55 2.47 2.48 2.38 2.11 2.5 2.3 1 2700 0.6

M3-0.5 3.05 2.97 2.95 2.87 2.57 3 2.75 1.5 4000 1

M4-0.7 4.07 3.99 3.93 3.85 3.39 4 3.6 3.4 7000 2.4

M5-0.8 5.08 5.00 4.92 4.84 4.30 5 4.6 7.1 11,400 4.7

Tolerance on Length3-6mm: ±0.375 6-10mm: ±0.45

10-18mm: ±0.55 18-30mm: ±0.65

Description A trilobular thread forming screw with a machine screw's thread pitch. As each lobe of the screw moves through the pilot holein the nut material, it forms and work hardens the nut thread metal, producing an uninterrupted grain flow.

Applications/ Advantages

For use in drilled, punched or cored holes in ductile metals and punch extruded metals. They provide superior prevailingtorque than can be achieved with most locking screws. Eliminates chips that result from using thread cutting screws. Requires

low drive torque and provides excellent resistance to vibrational loosening. Since these thread rolling screws are casehardened, it is not recommended they be used in die-cast or extruded aluminum or zinc.

Material AISI 1022 Steel

Surface Hardness 550 HV 0.3 Min.

Case DepthM2.5: 0.04-0.12 mm

M3: 0.05-0.18 mmM4 & M5: 0.10-0.25 mm

Core Hardness 240 - 370 HV 5

Torsional Strength The torque required to cause failure shall be equal to or greater than the breaking torque values shown in the above table.

Tensile Strength The tensile force required to cause failure shall be equal to or greater than the breaking force values shown in the above table.

Plating Thread rolling screws shall have a zinc finish with a wax coating. For more details see Appendix-A.

319

Self- Tapping ScrewsMETRICThread Rolling ScrewHead Dimensions

METRIC - TYPE Z (1A) FLAT HEADS FOR TAPPING SCREWS DIN 965

Nominal Size

A H M G

Drive SizeHead Diameter Head HeightRecess


Max Min Max Ref Max Min

M2.5 4.7 4.4 1.5 2.8 1.73 1.48 1

M3 5.5 5.2 1.65 3 2.01 1.76 1

M4 8.40 8.04 2.7 4.4 2.51 2.06 2

M5 9.30 8.94 2.7 4.9 3.05 2.60 2

METRIC - TYPE Z (1A) PAN HEADS FOR TAPPING SCREWS DIN 7985

NominalSize

A H M G S

Drive SizeHead Diameter Head HeightRecess

DiameterRecess Penetration Side Height

Max Min Max Min Ref Max Min Ref

M2.5 5.00 4.70 2.12 1.88 2.6 1.52 1.27 1.3 1

M3 6.00 5.70 2.52 2.28 3.0 1.93 1.68 1.6 1

M4 8.00 7.64 3.25 2.95 4.3 2.36 1.90 4.3 2

M5 10.00 9.64 3.95 3.65 5.0 3.10 2.64 2.5 2

320

METRICSelf-Tapping Screws Thread Rolling ScrewHole Size Data

NOTES:The values listed above are assigned to various materials and lengths of engagement and should be used as guidelines.

GUIDELINE VALUES FOR HOLE DIAMETERS USING DIN 7500 THREAD ROLLING SCREWS DIN 7500

Thread Size M2.5 M3 M4 M5

Materialthickness or

length ofengagement

Hole Diameter (dh)

Max Min Max Min Max Min Max Min

0.8 2.31 2.25

0.9 2.31 2.25

1 2.31 2.25 2.76 2.7

1.2 2.31 2.25 2.76 2.7

1.5 2.31 2.25 2.76 2.7 3.66 3.6 4.56 4.5

1.6 2.31 2.25 2.76 2.7 3.66 3.6 4.56 4.5

1.7 2.31 2.25 2.76 2.7 3.66 3.6 4.56 4.5

1.8 2.31 2.25 2.81 2.75 3.66 3.6 4.56 4.5

2 2.31 2.25 2.81 2.75 3.66 3.6 4.56 4.5

2.2 2.31 2.25 2.81 2.75 3.66 3.6 4.56 4.5

2.5 2.31 2.25 2.81 2.75 3.71 3.65 4.56 4.5

3 2.36 2.3 2.81 2.75 3.71 3.65 4.56 4.5

3.2 2.375 2.3 2.825 2.75 3.725 3.65 4.625 4.55

3.5 2.375 2.3 2.825 2.75 3.725 3.65 4.625 4.55

4 2.375 2.3 2.825 2.75 3.725 3.65 4.625 4.55

5 2.375 2.3 2.825 2.75 3.775 3.7 4.675 4.6

5.5 2.825 2.75 3.775 3.7 4.675 4.6

6 2.825 2.75 3.775 3.7 4.675 4.6

6.3 3.79 3.7 4.74 4.65

6.5 3.79 3.7 4.74 4.65

7 3.79 3.7 4.74 4.65

7.5 3.79 3.7 4.74 4.65

8 thru 10 4.74 4.65

321

METRIC - PHILLIPS FLAT HEADS FOR MACHINE SCREWS ISO 7046-1

NominalSize

ThreadPitch

A H M G U

PhillipsDriver SizeHead Diameter

HeadHeight

RecessDiameter Recess Penetration Thread Runout

Max Min Max Ref Max Min Max

M1.6 0.35 3.0 2.7 1 1.6 0.9 0.6 0.7 0

M2 0.4 3.8 3.5 1.2 1.9 1.2 0.9 0.8 0

M2.5 0.45 4.7 4.4 1.5 2.9 1.8 1.4 0.9 1

M3 0.5 5.5 5.2 1.65 3.2 2.1 1.7 1 1

M4 0.7 8.40 8.04 2.7 4.6 2.6 2.1 1.4 2

M5 0.8 9.30 8.94 2.7 5.2 3.2 2.7 1.6 2

M6 1 11.30 10.87 3.3 6.8 3.5 3.0 2 3

M8 1.25 15.80 15.37 4.65 8.9 4.6 4.0 2.5 4

M10 1.5 18.30 17.78 5 10 5.7 5.1 3 4

METRIC - SLOTTED FLAT HEADS FOR MACHINE SCREWS ISO 2009

NominalSize

ThreadPitch

A H J T U

Head DiameterHeadHeight Width of Slot Depth of Slot Thread Runout

Max Min Max Max Min Max Min Max

M1.6 0.35 3.0 2.7 1 0.60 0.46 0.50 0.32 0.7

M2 0.4 3.8 3.5 1.2 0.70 0.56 0.6 0.4 0.8

M2.5 0.45 4.7 4.4 1.5 0.80 0.66 0.75 0.50 0.9

M3 0.5 5.5 5.2 1.65 1.00 0.86 0.85 0.60 1

M4 0.7 8.40 8.04 2.7 1.51 1.26 1.3 1.0 1.4

M5 0.8 9.30 8.94 2.7 1.51 1.26 1.4 1.1 1.6

M6 1 11.30 10.87 3.3 1.91 1.66 1.6 1.2 2

M8 1.25 15.80 15.37 4.65 2.31 2.06 2.3 1.8 2.5

M10 1.5 18.30 17.78 5 2.81 2.56 2.6 2.0 3

T

90o

±2

H

JMA

H

Slotted Phillips

U U

A

Flat Head Machine ScrewsMETRIC

322

Oval HeadMachine Screws METRIC

METRIC - PHILLIPS OVAL HEADS FOR MACHINE SCREWS ISO 7047

NominalSize

ThreadPitch

A H O M G UPhillipsDriverSize

Head Diameter Head SideHeight

Height ofOval

RecessWidth

Recess Penetration Thread Runout

Max Min Max Ref Ref Max Min Max

M1.6 0.35 3.0 2.7 1 0.4 1.9 1.2 0.9 0.7 0

M2 0.4 3.8 3.5 1.2 0.5 2 1.5 1.2 0.8 0

M2.5 0.45 4.7 4.4 1.5 0.6 3 1.85 1.50 0.9 1

M3 0.5 5.5 5.2 1.65 0.7 3.4 2.2 1.8 1 1

M4 0.7 8.40 8.04 2.7 1 5.2 3.2 2.7 1.4 2

M5 0.8 9.30 8.94 2.7 1.2 5.4 3.4 2.9 1.6 2

M6 1 11.30 10.87 3.3 1.4 7.3 4.0 3.5 2 3

M8 1.25 15.80 15.37 4.65 2 9.6 5.25 4.75 2.5 4

M10 1.5 18.30 17.78 5 2.3 10.4 6.0 5.5 3 4

METRIC - SLOTTED OVAL HEADS FOR MACHINE SCREWS ISO 2010

NominalSize

ThreadPitch

A H O J T U

Head Diameter Head SideHeight

Height ofOval

Width of Slot Depth of Slot Thread Runout

Max Min Max Ref Max Min Max Min Max

M1.6 0.35 3.0 2.7 1 0.4 0.60 0.46 0.80 0.64 0.7

M2 0.4 3.8 3.5 1.2 0.5 0.70 0.56 1.0 0.8 0.8

M2.5 0.45 4.7 4.4 1.5 0.6 0.80 0.66 1.2 1.0 0.9

M3 0.5 5.5 5.2 1.65 0.7 1.00 0.86 1.45 1.20 1

M4 0.7 8.40 8.04 2.7 1 1.51 1.26 1.9 1.6 1.4

M5 0.8 9.30 8.94 2.7 1.2 1.51 1.26 2.4 2.0 1.6

M6 1 11.30 10.87 3.3 1.4 1.91 1.66 2.8 2.4 2

M8 1.25 15.80 15.37 4.65 2 2.31 2.06 3.7 3.2 2.5

M10 1.5 18.30 17.78 5 2.3 2.81 2.56 4.4 3.8 3

OJ

HT

90o

±2M

G

A

U

A

U

OH

Slotted Phillips

323

H1H

J

T G

A M A

UW

U

Slotted Phillips

METRIC - SLOTTED PAN HEADS FOR MACHINE SCREWS ISO 1580

NominalSize

ThreadPitch

A H J T W U

Head Diameter Head Height Width of Slot Depth ofSlot

WallThickness

Thread Runout

Max Min Max Min Max Min Min Min Max

M1.6 0.35 3.2 2.9 1.00 0.86 0.60 0.46 0.35 0.3 0.7

M2 0.4 4.0 3.7 1.30 1.16 0.70 0.56 0.5 0.4 0.8

M2.5 0.45 5.0 4.7 1.50 1.36 0.80 0.66 0.6 0.5 0.9

M3 0.5 5.6 5.3 1.80 1.66 1.00 0.86 0.7 0.7 1

M4 0.7 8.00 7.64 2.40 2.26 1.51 1.26 1 1 1.4

M5 0.8 9.50 9.14 3.00 2.86 1.51 1.26 1.2 1.2 1.6

M6 1 12.00 11.57 3.6 3.3 1.91 1.66 1.4 1.4 2

M8 1.25 16.00 15.57 4.8 4.5 2.31 2.06 1.9 1.9 2.5

M10 1.5 20.00 19.48 6.0 5.7 2.81 2.56 2.4 2.4 3

Pan Head Machine ScrewsMETRIC

324

Thread Dimensions;Mech & Perform. RequirementsMachine Screws METRIC

L

Axis of screw thread

Basicmajor

diameter

Minordiameter

Basicpitch

diameter

L

Description A metric machine screw is a straight shank fastener with a metric thread pitch designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw.


Machine screws form a fastening superior in strength to spaced thread screws. Metric screws are the type almost exclusively usedin items manufactured in Europe.

MaterialClass 4.8 machine screws shall be made from a carbon steel, partially or fully annealed as required, which conforms to the following

chemical composition-- Carbon: 0.55% maximum; Phosphorus: 0.05% maximum; Sulfur: 0.06% maximum.

Hardness Rockwell B 71 - 99.5 (Vickers HV 130 - 250)

Tensile Strength 420 N/mm2 minimum

Plating See Appendix-A for plating information

325

Machine ScrewsMETRIC

THREAD PITCH COMPARISON

Millimeters Threads per Inch

0.25 101.5

0.3 84.75

0.35 72.5

0.4 63.5

0.45 56.5

0.5 50.75

0.6 42.5

0.7 36.5

0.75 33.75

0.8 31.75

0.9 28.5

1 25.5

1.25 20.25

1.5 17

1.75 14.5

2 12.75

2.5 10.25

3 8.5

3.5 7.25

4 6.25

4.5 5.5

5 5.25

5.5 4.5

6 4.25

ConversionChart

326

Cap Screws & Bolts METRIC Hex BoltsClass 8.8 & 10.9

H

L

G

F

K

ET

RU

W

*For nominal lengths over 200mm.**DIN 931 spec for maximum width across flats on these three diameters are 17, 19 & 22 mm, respectively.

METRIC - HEX HEAD B OLTS, PRODUCT GRADE B ISO 4014

NominalSize

ThreadPitch

R W T U E H F G K

Threaded LengthWasher Face

Thickness

FilletTransitionDiameter

Under-headFillet

WasherFace

DiameterHead Height

Width AcrossFlats

WidthAcrossCorners

Wrench-ing

Height

L>125mm<=200mm

L>200mm Max Min Max Max Min Max Min Max Min Min Min

M16 2 44 - 0.8 0.2 17.7 3 22 10.29 9.71 24 23.16 26.17 6.8

M20 2.5 52 - 0.8 0.2 22.4 4 27.7 12.85 12.15 30 29.16 32.95 8.51

M24 3 60 73 0.8 0.2 26.4 4 33.25 15.35 14.65 36 35 39.55 10.26

M30 3.5 72 85 0.8 0.2 33.4 6 42.75 19.12 18.28 46 45 50.85 12.8

M36 4 84 97 0.8 0.2 39.4 6 51.11 22.92 22.08 55 53.8 60.79 15.46

M42 4.5 96 109 1 0.3 45.6 8 59.95 26.42 25.58 65 63.1 71.3 17.91

M48 5 108 121 1 0.3 52.6 10 69.45 30.42 29.58 75 73.1 82.6 20.71

M56 5.5 - 137 1 0.3 63 12 78.66 35.5 34.5 85 82.8 93.56 24.15

M64 6 - 153 1 0.3 71 13 88.16 40.5 39.5 95 92.8 104.86 27.65

Tolerance on Length110-120mm: ±1.75 130-180mm: ±2.0 200-240mm: ±2.3 260-300mm: ±2.6

320-400mm: ±2.85 420-500mm: ±3.15

METRIC - HEX HEAD B OLTS, PRODUCT GRADE A ISO 4014

NominalSize

ThreadPitch

R W T U E H F G K

Threaded LengthWasher Face

Thickness


Under-headFillet

WasherFace

DiameterHead Height

Width AcrossFlats

WidthAcrossCorners

Wrench-ing

Height

L <= 125mm

L>125mm<=200mm Max Min Max Max Min Max Min Max Min Min Min

M1.6 0.35 9 - 0.25 0.1 2 0.6 2.27 1.225 0.975 3.2 3.02 3.41 0.68

M2 0.4 10 - 0.25 0.1 2.6 0.8 3.07 1.525 1.275 4 3.82 4.32 0.89

M2.5 0.45 11 - 0.25 0.1 3.1 1 4.07 1.825 1.575 5 4.82 5.45 1.1

M3 0.5 12 - 0.4 0.15 3.6 1 4.57 2.125 1.875 5.5 5.32 6.01 1.31

M4 0.7 14 - 0.4 0.15 4.7 1.2 5.88 2.925 2.675 7 6.78 7.66 1.87

M5 0.8 16 - 0.5 0.15 5.7 1.2 6.88 3.65 3.35 8 7.78 8.79 2.35

M6 1 18 - 0.5 0.15 6.8 1.4 8.88 4.15 3.85 10 9.78 11.05 2.7

M8 1.25 22 - 0.6 0.15 9.2 2 11.63 5.45 5.15 13 12.73 14.38 3.61

M10 1.5 26 - 0.6 0.15 11.2 2 14.63 6.58 6.22 16** 15.73 17.77 4.35

M12 1.75 30 - 0.6 0.15 13.7 3 16.63 7.68 7.32 18** 17.73 20.03 5.12

M14 2 34 40 0.6 0.15 15.7 3 19.37 8.98 8.62 21** 20.67 23.36 6.03

M16 2 38 44 0.8 0.2 17.7 3 22.49 10.18 9.82 24 23.67 26.75 6.87

M20 2.5 46 52 0.8 0.2 22.4 4 28.19 12.715 12.285 30 29.67 33.53 8.6

M24 3 54 60 73* 0.8 0.2 26.4 4 33.61 15.215 14.785 36 35.38 39.98 10.35


90-120: ±0.7 130-150mm: ±0.8

327

CLASS 8.8 BOLTS

CLASS 10.9 BOLTS10.9

10.9

8.8

8.8

Description A hex bolt with metric thread pitch made from medium carbon steel and heat-treated. Grade-A bolts are the preferred style for mostapplications. Grade-B bolts have looser tolerances and can be manufactured in a cold or hot-forging process.


Has greater tensile strength than Class 4.6, 4.8 and 5.8 bolts.

Material

Class 8.8 bolts can be made from a carbon steel with additives (such as Boron, Manganese or Chromium) which conforms to thefollowing chemical composition-- Carbon: 0.15-0.40%; Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum. In case of plain

carbon boron alloyed steel with a carbon content of less than 0.25% (ladle analysis), the minimum Manganese content shall be 0.6%

Class 8.8 bolts can be made from a carbon steel which conforms to the following chemical composition-- Carbon: 0.25-0.55%;Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum.

Heat Treatment Class 8.8 bolts shall be heat treated by quenching in a liquid medium from above the transformation temperature and reheating to atempering temperature of 425°C.

Core Hardness For diameters less than or equal to 16mm: Rockwell C22 - 32 (Vickers HV 250 - 320)For diameters greater than 16mm: Rockwell C23 - 34 (Vickers HV 255 - 335)

Surface Hardness Shall not be more than 30 Vickers points above the measured core hardness on the product

Proof Load For diameters less than or equal to 16mm: 640 N/mm2 minimumFor diameters greater than 16mm: 660 N/mm2 minimum

Tensile Strength For diameters less than or equal to 16mm: 800 N/mm2 minimumFor diameters greater than 16mm: 830 N/mm2 minimum

Elongation 12% minimum


Description A bolt with metric thread pitch made from medium carbon alloy steel and heat-treated. Grade-A bolts are the preferred style for mostapplications. Grade-B bolts have looser tolerances and can be manufactured in a cold or hot-forging process.


Has greater tensile strength than Class 8.8 bolts; is most comparable but not exactly equivalent to U.S. Grade 8 cap screws.

Material

Class 10.9 bolts can be made from a carbon steel which conforms to the following chemical composition-- Carbon: 0.25-0.55%;Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum.

Class 10.9 bolts can be made from a low carbon martensite steel with additives (such as Boron, Manganese or Chromium) whichconforms to the following chemical composition-- Carbon: 0.20-0.55%; Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum. Incase of plain carbon boron alloyed steel with a carbon content 0f less than 0.25% (ladle analysis), the minimum Manganese content

shall be 0.7%

Class 10.9 bolts can be made from an alloy steel which conforms to the following chemical composition--Carbon: 0.20-0.55%; Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum; and shall contain one or more of the following

elements: Chromium, Nickel, Molybdenum or Vanadium

Heat TreatmentClass 10.9 bolts shall be heat treated by quenching in oil from above the transformation temperature and reheating to a tempering

temperature of 425°C.

Core Hardness Rockwell C32 - 39 (Vickers HV 320 - 380)


Proof Load 940 N/mm2 minimum




Hex BoltsGrade-A & B Bolts & Cap ScrewsMETRIC

328

METRIC - HEX HEAD CAP SCREWS, PRODUCT GRADE B ISO 4017

NominalSize

ThreadPitch

A W T E H F G K

Thread Run-OutWasher Face

Thickness


WasherFace

DiameterHead Height

Width AcrossFlats

WidthAcrossCorners

Wrench-ing

Height

Max Min Max Min Max Min Max Min Max Min Min Min

M16 2 6 2 0.8 0.2 17.7 22 10.29 9.71 24 23.16 26.17 6.8

M20 2.5 7.5 2.5 0.8 0.2 22.4 27.7 12.85 12.15 30 29.16 32.95 8.51

M24 3 9 3 0.8 0.2 26.4 33.25 15.35 14.65 36 35 39.55 10.26

M30 3.5 10.5 3.5 0.8 0.2 33.4 42.75 19.12 18.28 46 45 50.85 12.8

M36 4 12 4 0.8 0.2 39.4 51.11 22.92 22.08 55 53.8 60.79 15.46

M42 4.5 13.5 4.5 1 0.3 45.6 59.95 26.42 25.58 65 63.1 71.3 17.91

M48 5 15 5 1 0.3 52.6 69.45 30.42 29.58 75 73.1 82.6 20.71

M56 5.5 16.5 5.5 1 0.3 63 78.66 35.5 34.5 85 82.8 93.56 24.15

M64 6 18 6 1 0.3 71 88.16 40.5 39.5 95 92.8 104.86 27.65

Tolerance on Length 60-80mm: ±1.5 90-120mm: ±1.75 130-180mm: ±2.0 200mm: ±2.3

*DIN 933 spec for maximum width across flats on these three diameters are 17, 19 & 22 mm, respectively.

METRIC - HEX HEAD CAP SCREWS, FULL THREAD, PRODUCT GRADE A ISO 4017

NominalSize

ThreadPitch

A W T E H F G K

Thread Run-OutWasher Face

Thickness


WasherFace

DiameterHead Height

Width AcrossFlats

WidthAcrossCorners

Wrench-ing

Height

Max Min Max Min Max Min Max Min Max Min Min Min

M1.6 0.35 1.05 0.35 0.25 0.1 2 2.27 1.225 0.975 3.2 3.02 3.41 0.68

M2 0.4 1.2 0.4 0.25 0.1 2.6 3.07 1.525 1.275 4 3.82 4.32 0.89

M2.5 0.45 1.35 0.45 0.25 0.1 3.1 4.07 1.825 1.575 5 4.82 5.45 1.1

M3 0.5 1.5 0.5 0.4 0.15 3.6 4.57 2.125 1.875 5.5 5.32 6.01 1.31

M4 0.7 2.1 0.7 0.4 0.15 4.7 6.03 2.925 2.675 7 6.78 7.66 1.87

M5 0.8 2.4 0.8 0.5 0.15 5.7 6.88 3.65 3.35 8 7.78 8.79 2.35

M6 1 3 1 0.5 0.15 6.8 8.88 4.15 3.85 10 9.78 11.05 2.7

M8 1.25 4 1.25 0.6 0.15 9.2 11.63 5.45 5.15 13 12.73 14.38 3.61

M10 1.5 4.5 1.5 0.6 0.15 11.2 14.63 6.58 6.22 16* 15.73 17.77 4.35

M12 1.75 5.3 1.75 0.6 0.15 13.7 16.63 7.68 7.32 18* 17.73 20.03 5.12

M14 2 6 2 0.6 0.15 15.7 19.37 8.98 8.62 21* 20.67 23.36 6.03

M16 2 6 2 0.8 0.2 17.7 22.49 10.18 9.82 24 23.67 26.75 6.87

M20 2.5 7.5 2.5 0.8 0.2 22.4 28.19 12.715 12.285 30 29.67 33.53 8.6

M24 3 9 3 0.8 0.2 26.4 33.61 15.215 14.785 36 35.38 39.98 10.35

Tolerance on Length

2-3mm: ±0.2 4-6mm: ±0.24 8-10mm: ±0.29

12-16mm: ±0.35 20-30mm: ±0.42 35-50mm: ±0.5

55-80mm: ±0.6 90-120: ±0.7 130-150mm: ±0.8

METRIC Full Thread Hex CapScrews Grade-A & BCap Screws & Bolts

329

Bolts & Cap ScrewsMETRICFull Thread Hex CapScrews Class 8.8 & 10.9

Description A cap screw with metric thread pitch, threaded to the head, made from medium carbon steel and heat-treated. Grade-A bolts are thepreferred style for most applications. Grade-B bolts have looser tolerances and can be manufactured in a cold or hot-forging process.


Has greater tensile strength than Class 4.6, 4.8 and 5.8 cap screws. Being threaded to the head makes the part useful for mountingmotors to machinery. They are also used in automotive and truck repair.

Material

Class 8.8 cap screws can be made from a carbon steel with additives (such as Boron, Manganese or Chromium) which conforms to thefollowing chemical composition-- Carbon: 0.15-0.40%; Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum. In case of plain

carbon boron alloyed steel with a carbon content of less than 0.25% (ladle analysis), the minimum Manganese content shall be 0.6%

Class 8.8 cap screws can be made from a carbon steel which conforms to the following chemical composition-- Carbon: 0.25-0.55%;Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum.

Heat Treatment Class 8.8 cap screws shall be heat treated by quenching in a liquid medium from above the transformation temperature and reheating toa tempering temperature of 425°C.

Core Hardness For diameters less than or equal to 16mm: Rockwell C22 - 32 (Vickers HV 250 - 320)For diameters greater than 16mm: Rockwell C23 - 34 (Vickers HV 255 - 335)


Proof Load For diameters less than or equal to 16mm: 640 N/mm2 minimumFor diameters greater than 16mm: 660 N/mm2 minimum

Tensile Strength For diameters less than or equal to 16mm: 800 N/mm2 minimumFor diameters greater than 16mm: 830 N/mm2 minimum



CLASS 8.8 FULL-THREAD CAP SCREWS

CLASS 10.9 FULL-THREAD CAP SCREWS

8.8

8.8

10.9

10.9

DescriptionA cap screw with metric thread pitch, threaded to the head, made from medium carbon alloy steel and heat-treated. Grade-A bolts are

the preferred style for most applications. Grade-B bolts have looser tolerances and can be manufactured in a cold or hot-forgingprocess.


Has greater tensile strength than Class 8.8 full-thread cap screws. Is most comparable but not exactly equivalent to U.S. Grade 8 capscrews.

Material

Class 10.9 cap screws can be made from a carbon steel which conforms to the following chemical composition-- Carbon: 0.25-0.55%;Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum.

Class 10.9 cap screws can be made from a low carbon martensite steel with additives (such as Boron, Manganese or Chromium) whichconforms to the following chemical composition-- Carbon: 0.20-0.55%; Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum. Incase of plain carbon boron alloyed steel with a carbon content 0f less than 0.25% (ladle analysis), the minimum Manganese content

shall be 0.7%

Class 10.9 cap screws can be made from an alloy steel which conforms to the following chemical composition--Carbon: 0.20-0.55%; Phosphorus: 0.035% maximum; Sulfur: 0.035% maximum; and shall contain one or more of the following

elements: Chromium, Nickel, Molybdenum or Vanadium

Heat Treatment Class 10.9 cap screws shall be heat treated by quenching in oil from above the transformation temperature and reheating to a temperingtemperature of 425°C.

Core Hardness Rockwell C32 - 39 (Vickers HV 320 - 380)






330

Carriage BoltsSquare Neck (large)Cap Screws & Bolts METRIC

HP

A

O

L

C

L1

METRIC - CARRIAGE BOLTSISO 8677;DIN 603;

JIS B 1171

NominalDiameter Pitch

(mm)

O C P A H L1

Square WidthAcross Flats

SquareWidthAcrossCorners

Square Depth Head Diameter Head HeightThreadLength<=125

ThreadLength>125 &<=200

ThreadLength

>200

mm Max Min Min Max Min Max Min Max Min Ref Ref Ref

M5 0.8 5.48 4.52 5.9 4.1 2.9 13 11.9 3.1 2.5 16 - -

M6 1 6.48 5.52 7.2 4.6 3.4 16 14.9 3.6 3 18 - -

M8 1.25 8.58 7.42 9.6 5.6 4.4 20 18.7 4.8 4 22 28 -

M10 1.5 10.58 9.42 12.2 6.6 5.4 24 22.7 5.8 5 26 32 -

M12 1.75 12.7 11.3 14.7 8.8 7.2 30 28.7 6.8 6 30 36 -

M16 2 16.7 15.3 19.9 12.9 11.1 38 36.4 8.9 8 38 44 57

M20 2.5 20.84 19.16 24.9 15.9 14.1 46 44.4 10.9 10 46 52 65

Tolerance on Length20-30mm: ±1.05 35-50mm: ±1.25 55-80mm: ±1.5

90-120mm: ±1.75 130-150mm: ±2.0 160-180mm: ±4.0 200mm: ±4.6

Description A round head, self-anchoring bolt with a square neck under the head and a metric thread pitch.


The square neck is designed to keep the bolt from turning as a nut is tightened. Best for use in wood or thick gauge sheet metal.

Material Class 4.6 carriage bolts shall be made from a carbon steel which conforms to the following chemical composition--Carbon: 0.55% maximum; Phosphorus: 0.05% maximum; Sulfur: 0.06% maximum.


Yield Strength 240 N/mm2 minimum




331

Bolts & Cap ScrewsMETRICCarriage Bolts,Short Neck

HP

A

O

B

L10 to 15o

C

L1

METRIC - CARRIAGE B OLTS, SHORT NECKISO 8678;DIN 603;

JIS B 1171

NominalDiameter Pitch

(mm)

O C P A B H L1

Square WidthAcross Flats

SquareWidthAcrossCorners

Square DepthHead

Diameter

BearingSurface

Diameterunder Head

Head HeightThreadLength<=125

ThreadLength>125 &<=200

mm Max Min Min Max Min Max Min Max Min Ref Ref

M6 1 6.48 5.88 7.64 3 2.4 14.2 12.2 3.6 3 18 -

M8 1.25 8.58 7.85 10.2 3 2.4 18 15.8 4.8 4 22 28

M10 1.5 10.58 9.85 12.8 4 3.2 22.3 19.6 5.8 5 26 32

M12 1.75 12.7 11.82 15.37 4 3.2 26.6 23.8 6.8 6 30 36

M16 2 16.7 15.82 20.57 5 4.2 35 31.9 8.9 8 38 44

M20 2.5 20.84 19.79 25.73 5 4.2 43 39.9 10.9 10 46 52

Tolerance on Length12-16mm: ±0.9 20-30mm: ±1.05 35-50mm: ±1.25

55-80mm: ±1.5 90-120mm: ±1.75 130-160mm: ±2.0

Description A round head, self-anchoring bolt with a shorter square neck than a standard carriage bolt, and a metric thread pitch.


Used in the same way as a standard carriage bolt but in sheet metal where a full-sized square neck would cause an obstruction onthe nut side of the fastening.

Material Class 4.8 carriage bolts shall be made from a carbon steel which conforms to the following chemical composition--Carbon: 0.55% maximum; Phosphorus: 0.05% maximum; Sulfur: 0.06% maximum.


Yield Strength 340 N/mm2 minimum




332

Hex NutsStyle 1 & Class 6

Nuts METRIC

H

G

F

CLASS 6 HEX NUTS

METRIC - HEX NUTS, STYLE 1 ISO 4032


F G H

Width Across Flats Width Across Corners Thickness

Max Min Min Max Min

M1.6 0.35 3.2 3.02 3.41 1.3 1.05

M2 0.4 4 3.82 4.32 1.6 1.35

M2.5 0.45 5 4.82 5.45 2 1.75

M3 0.5 5.5 5.32 6.01 2.4 2.15

M4 0.7 7 6.78 7.66 3.2 2.9

M5 0.8 8 7.78 8.79 4.7 4.4

M6 1 10 9.78 11.05 5.2 4.9

M8 1.25 13 12.73 14.38 6.8 6.44

M10 1.5 16 15.73 17.77 8.4 8.04

M12 1.75 18 17.73 20.03 10.8 10.37

M14 2 21 20.67 23.35 12.8 12.1

M16 2 24 23.67 26.75 14.8 14.1

M20 2.5 30 29.16 32.95 18 16.9

M24 3 36 35 39.55 21.5 20.2

M30 3.5 46 45 50.85 25.6 24.3

M36 4 55 53.8 60.79 31 29.4

M42 4.5 65 63.1 71.3 34 32.4

M48 5 75 73.1 82.6 38 36.4

M56 5.5 85 82.8 93.56 45 43.4

M64 6 95 92.8 104.86 51 49.1

6

6

DescriptionA six-sided internally threaded, non-heat treated fastener with a metric thread pitch. Nuts M16 and smaller are chamfered on the top andthe bearing surface. Nuts M18 and larger may be either double chamfered, or have a washer face on one side and a chamfered surface

on the opposite side.


Class 6 nuts are intended for use with screws and bolts of property class 6.8 or lower. They are the most popular nut for use with metricmachine screws.

Material

Class 6 nuts shall be made of a steel which conforms to the following chemical composition--Carbon: 0.50% maximum; Phosphorus: 0.060% maximum; Sulfur: 0.150% maximum.

Class 6 nuts may also be made from free-cutting steel which conforms to the following chemical composition--Carbon: 0.50% maximum; Sulfur: 0.34% minimum; Phosphorus: 0.11% minimum; Lead: 0.35% minimum.

Hardness Diam. thru M16: Vickers HV 150 - 302 (Rockwell B78.7 - C30); Diam. M18 thru M39: Vickers HV 170 - 302 (Rockwell B85 - C30)

Proof Load

Diameters M1.6 through M4: 600 N/mm2

Diameters M5 through M7: 670 N/mm2





333

NutsMETRICClasses8 & 10

CLASS 10 HEX NUTS

CLASS 8 HEX NUTS8

8

10

10

Description A Style 1, heat treated fastener with a metric thread pitch. Nuts M16 and smaller are chamfered on the top and the bearing surface. NutsM20 and larger may be either double chamfered, or have a washer face on one side and a chamfered surface on the opposite side.


Class 10 nuts are intended for use with screws and bolts of property classes 10.9 and lower. They are widely used in farm equipment.

Material Class 10 nuts shall be made of a steel which conforms to the following chemical composition-- Carbon: 0.58% maximum;Manganese: 0.30% minimum; Phosphorus: 0.048% maximum; Sulfur: 0.058% maximum.

Heat Treatment Class 10 nuts shall be heat treated by quenching in a liquid medium from a temperature above the transformation temperature andtempering at a temperature of at least 425°C.

Hardness Rockwell C26 - 36 (Vickers HV 272 - 353)

Proof LoadDiameters through M10: 1040 N/mm2




DescriptionA Style 1 hex nut with a metric thread pitch. Nuts M16 and smaller are chamfered top and bottom, and are not heat-treated. Nuts M18and larger are (1) heat-treated and (2) may be double chamfered, or have a washer face on one side and a chamfered surface on the

opposite side.


Class 8 nuts are intended for use with screws and bolts of property class 8.8 or lower. They are widely used in the automotive andelectronics industries.

Material Class 8 nuts shall be made of a steel which conforms to the following chemical composition--Carbon: 0.58% maximum; Manganese: 0.25% minimum; Phosphorus: 0.060% maximum; Sulfur: 0.150% maximum.

Heat TreatmentClass 8 nuts of diameter 18mm or greater shall be heat treated by quenching in a liquid medium from a temperature above the

transformation temperature and tempering at a temperature of at least 425°C.

HardnessDiameters M1.6 through M4: Vickers HV 180 - 302 (Rockwell B87.1 - C30)Diameters M5 through M16: Vickers HV 200 - 302 (Rockwell B91.5 - C30)

Diameters through M18 through M39: Vickers HV 233 - 353 (Rockwell C18 - 36)

Proof Load







334

METRICNuts Hex Nut Style 2Class 9

H

G

F



F G H


Max Min Min Max Min

M5 0.8 8 7.78 8.79 5.1 4.8

M6 1 10 9.78 11.05 5.7 5.4

M8 1.25 13 12.73 14.38 7.5 7.14

M10 1.5 16 15.73 17.77 9.3 8.94

M12 1.75 18 17.73 20.03 12 11.57

M14 2 21 20.67 23.35 14.1 13.4

M16 2 24 23.67 26.75 16.4 15.7

M20 2.5 30 29.16 32.95 20.3 19

M24 3 36 35 39.55 23.9 22.6

M30 3.5 46 45 50.85 28.6 27.3

M36 4 55 53.8 60.79 34.7 33.1

9

9

DescriptionA six-sided internally threaded, non-heat treated fastener with a metric thread pitch which, as a Style 2 nut, is approximately 10% thicker

than a Style 1 nut of the same nominal diameter. Nuts M16 and smaller are chamfered on the top and the bearing surface. Nuts M18and larger may be either double chamfered, or have a washer face on one side and a chamfered surface on the opposite side.


Class 9 nuts are intended for use with screws and bolts of property classes 4.6, 4.8, 5.8, 8.8 or 9.8.


Hardness Diameters M1.6 through M4: Rockwell B85 - C30 (Vickers HV 170 - 302)Diameters M5 through M39: Rockwell B89 - C30 (Vickers HV 188 - 302)

Proof Load







335

NutsMETRICHex Nut Style 2Class 12

H

G

F



F G H


Max Min Min Max Min

M5 0.8 8 7.78 8.79 5.1 4.8

M6 1 10 9.78 11.05 5.7 5.4

M8 1.25 13 12.73 14.38 7.5 7.14

M10 1.5 16 15.73 17.77 9.3 8.94

M12 1.75 18 17.73 20.03 12 11.57

M14 2 21 20.67 23.35 14.1 13.4

M16 2 24 23.67 26.75 16.4 15.7

M20 2.5 30 29.16 32.95 20.3 19

M24 3 36 35 39.55 23.9 22.6

M30 3.5 46 45 50.85 28.6 27.3

M36 4 55 53.8 60.79 34.7 33.1

12

12

DescriptionA six-sided internally threaded, heat treated fastener with a metric thread pitch. Style 2 nuts are approximately 10% thicker than

Style 1 nuts of the same nominal diameter. Nuts M16 and smaller are chamfered on the top and the bearing surface. Nuts M18 andlarger may be either double chamfered, or have a washer face on one side and a chamfered surface on the opposite side.


Class 12 nuts are intended for use with screws and bolts of property classes 12.9 or lower.


Heat Treatment Class 12 nuts shall be heat treated by quenching in a liquid medium from a temperature above the transformation temperature andtempering at a temperature of at least 425°C.

Hardness Style 1: Vickers HV 295 - 353 (Rockwell C 29.2 - 36)Style 2: Vickers HV 272 - 353 (Rockwell C 25 - 36)

Proof LoadStyle 1: Diameters M1.6 through M10: 1140 N/mm2; Diameters M12 through M16: 1170 N/mm2

Style 2: Diameters M1.6 through M7: 1150 N/mm2; Diameters M8 through M10: 1160 N/mm2;Diameters M12 through M16: 1190 N/mm2; Diameters M18 through M36: 1200 N/mm2


336

Nuts METRIC Hex Jam

H1

G

F

METRIC - HEX JAM NUTS ISO 4035


F G H


Max Min Min Max Min

M1.6 0.35 3.2 3.02 3.41 1 0.75

M2 0.4 4 3.82 4.32 1.20 0.95

M2.5 0.45 5 4.82 5.45 1.60 1.35

M3 0.5 5.5 5.32 6.01 1.80 1.55

M4 0.7 7 6.78 7.66 2.20 1.95

M5 0.8 8 7.78 8.79 2.70 2.45

M6 1 10 9.78 11.05 3.20 2.9

M8 1.25 13 12.73 14.38 4 3.7

M10 1.5 16 15.73 17.77 5 4.7

M12 1.75 18 17.73 20.03 6 5.7

M14 2 21 20.67 23.35 7 6.42

M16 2 24 23.67 26.75 8 7.42

M20 2.5 30 29.16 32.95 10 9.10

M24 3 36 35 39.55 12 10.9

M30 3.5 46 45 50.85 15 13.9

M36 4 55 53.8 60.79 18 16.9

M42 4.5 65 63.1 71.3 21 19.7

M48 5 75 73.1 82.6 24 22.7

DescriptionA six-sided internally threaded, non-heat treated fastener with a metric thread pitch that is approximately 1/2 the thickness of a Style 2nut. Nuts M16 and smaller are chamfered on the top and the bearing surface. Nuts M18 and larger may be either double chamfered, or

have a washer face on one side and a chamfered surface on the opposite side.


Class 04 metric hex jam nuts are tightened against the work surface and a Style 1 or Style 2 hex nut is tightened against the jam nut tokeep it from loosening.

Material Class 04 hex jam nuts shall be made of a steel which conforms to the following chemical composition-- Carbon: 0.58% maximum;Manganese: 0.25% minimum; Phosphorus: 0.060% maximum; Sulfur: 0.150% maximum.

Hardness HV 188 - 302 (Rockwell B 88 - C 30)

Proof Load 380 N/mm2


337

METRIC NutsK-Lock Nut (With Free-Spinning External ToothLockwasher)

I H

W

F

METRIC - K-LOCK NUTS, CLASS 8 DIN 934K


F H T I W

Width AcrossFlats Nut Thickness

Total Thickness(Nut w/assembled

washer)Width of Washer

WasherThickness

M3 0.50 5.5 2.40 3.20 6.30 0.45

M4 0.70 7 3.20 4 8 0.45

M5 0.80 8 4 5.10 9.20 0.60

M6 1 10 5 6.10 11.0 0.60

M8 1.25 13 6.50 7.90 14.90 0.80

M10 1.50 17 8 9.60 19 0.90

Description A hex nut with metric thread pitch, pre-assembled with a free spinning external tooth lock washer. The locking action is achieved when thenut is tightened against a bearing surface as the teeth of the lock washer dig into it.

Applications/Advantages This is the most popular type of locknut because of its versatility, cost and ease of installation. Doesn't gall screw threads.

MaterialNuts shall be made from a low carbon steel which conforms to the following chemical composition requirements--

Carbon: 0.58% maximum; Manganese: 0.25% minimum; Phosphorous: 0.060% maximum; Sulfur: 0.150% maximum;Washers-- Spring steel.

Hardness Nuts-- M3 - M4: Vickers HV 180 - 302 (Rockwell B87.1 - C30); M5 - M10: Vickers HV 200 - 302 (Rockwell B91.5 - C30)Washers-- Rockwell C 41 - 47

Plating See Appendix-A for information about the plating of steel nuts.

338

METRICNuts Nylon Insert Lock Nuts- Regular Pattern

METRIC - NYLON INSERT STOP NUTS, REGULAR PATTERN, CLASS 8 STYLE 1 ISO 7040


F G H I

Width Across FlatsWidth Across

CornersThickness

WrenchingHeight

Max Min Min Max Min Min

M3 0.5 5.50 5.32 6.01 4.5 4.02 1.72

M4 0.7 7.00 6.78 7.66 6.00 5.52 2.32

M5 0.8 8.00 7.78 8.79 6.80 6.22 3.52

M6 1 10.00 9.78 11.05 8.00 7.42 3.92

M8 1.25 13.00 12.73 14.38 9.50 8.92 5.15

M10 1.5 16.00 15.73 17.77 11.9 11.2 6.43

M12 1.75 18.00 17.73 20.03 14.9 14.2 8.3

M16 2 24.00 23.67 26.75 19.1 17.8 11.28

M20 2.5 30.00 29.16 32.95 22.8 20.7 13.52

M24 3 36 35 39.55 27.1 25.0 16.16

M30 3.5 46 45 50.85 32.6 30.1 19.44

M36 4 55.0 53.8 60.79 38.9 36.4 23.52

H

I

G

F

DescriptionHex nut with a metric thread pitch and a nylon-filled collar at its back end. Class 8, style 1 nuts of a basic diameter greater than M16are quenched and tempered. When a screw reaches the collar, the threads and nylon form a tight, frictional fit, restricting movement

of the screw when it is subjected to vibration. The nylon insert comes in various colors.


Class 8 metric nylon insert lock nuts are to be used with screw of a Class 8.8 or less. It is able to be reused more times than a two-way reversible nut. It is less expensive than a Grade-C automation lock nut. Nylon insert lock nuts are designed for use in

temperatures from -73°C to +120°C.

Material Class 8 metric nylon insert lock nuts shall be made of a steel which conforms to the following chemical composition--Carbon: 0.58% maximum; Manganese: 0.25% minimum; Phosphorus: 0.060% maximum; Sulfur: 0.150% maximum.

HardnessM3 - M4: HV 180 - 302 (Rockwell B 87.1 - C 30)

M5 - M16: HV 200 - 302 (Rockwell B 91.5 - C 30)M20 - M36: HV 233 - 353 (Rockwell C 18 - C 36)

Proof Load (N/mm2)

M3 - M4: 800M5 - M7: 855

M8 - M10: 870M12 - M16: 880M20 - M36: 920


339

NutsMETRICNylon Insert Lock Nuts- Heavy Pattern

METRIC - NYLON INSERT STOP NUTS, HEAVY PATTERN, CLASS 9 STYLE 2 ISO 7040


F G H I


CornersThickness

WrenchingHeight


M5 0.8 8.00 7.78 8.79 7.20 6.62 3.52

M6 1 10.00 9.78 11.05 8.50 7.92 3.92

M8 1.25 13.00 12.73 14.38 10.2 9.5 5.15

M10 1.5 16.00 15.73 17.77 12.8 12.1 6.43

M12 1.75 18.00 17.73 20.03 16.1 15.4 8.3

M16 2 24.00 23.67 26.75 20.7 19.4 11.28

M20 2.5 30.00 29.16 32.95 25.1 23.0 13.52

M24 3 36 35 39.55 29.5 27.4 16.16

M30 3.5 46 45 50.85 35.6 33.1 19.44

M36 4 55.0 53.8 60.79 42.6 40.1 23.52

G

FH

I

DescriptionSimilar in design to a regular nylon insert stop nut except that it is 6-8% thicker. When a screw reaches the collar, the threads and

nylon form a tight, frictional fit, restricting movement of the screw when it is subjected to vibration. The nylon insert comes in variouscolors.


Provides a greater length of thread engagement than regular nylon insert stop nuts resulting in greater proof load stress properties.Class 9, style 2 metric nylon insert lock nuts are to be used with screw of a Class 9.8 or less. It is able to be reused more times than a

two-way reversible nut. It is less expensive than a Grade-C automation lock nut. Nylon insert lock nuts are designed for use intemperatures from -73°C to +120°C.

MaterialClass 9 metric nylon insert lock nuts shall be made of a steel which conforms to the following chemical composition--Carbon: 0.58% maximum; Manganese: 0.25% minimum; Phosphorus: 0.060% maximum; Sulfur: 0.150% maximum.

Insert is made of polyamid.

Hardness M3 - M4: HV 170 - 302 (Rockwell B85 - C30)M5 - M36: HV 188 - 302 (Rockwell B89 - C30)

Proof Load (N/mm2)

M3 - M4: 900M5 - M7: 915

M8 - M10: 940M12 - M16: 950M20 - M36: 920


340

METRICNuts DIN 985Nylon Insert Lock Nuts

METRIC - NYLON INSERT STOP NUTS, REGULAR PATTERN, CLASS 8 DIN 985

Nominal Size

F G H I


CornersThickness Wrenching Height


M3 5.50 5.32 6.01 4 3.7 2.4

M4 7.00 6.78 7.66 5 4.7 2.9

M5 8.00 7.78 8.79 5 4.7 3.2

M6 10.00 9.78 11.05 6 5.7 4

M7 11.00 10.73 12.12 7.5 7.14 4.7

M8 13.00 12.73 14.38 8 7.64 5.5

M10 17.00 16.73 18.90 10 9.64 6.5

M12 19.00 18.67 21.10 12 11.57 8

M14 22.00 21.67 24.49 14 13.3 9.5

M16 24.00 23.67 26.75 16 15.3 10.5

M18 27.00 26.16 29.56 18 17.66 13

M20 30.00 29.16 32.95 20 18.7 14

DescriptionHex nut with a metric thread pitch and a nylon-filled collar at its back end. Class 8, style 1 nuts of a basic diameter greater than M16are quenched and tempered. When a screw reaches the collar, the threads and nylon form a tight, frictional fit, restricting movement

of the screw when it is subjected to vibration. The nylon insert comes in various colors.


Class 8 metric nylon insert lock nuts are to be used with screw of a Class 8.8 or less. It is able to be reused more times than a two-way reversible nut. It is less expensive than a Grade-C automation lock nut. Nylon insert lock nuts are designed for use in

temperatures from -73°C to +120°C.

Material M3 - M16: AISI 1006, 1010, 1022 or equivalent steelM18 and larger: AISI 1035 or equivalent steel

Hardness Vickers HV 5: 302 maximumRockwell: C 30 maximum

Proof Load (N/mm2) 800

Plating DIN 985 nylon insert stop nuts are usually supplied zinc plated. See Appendix-A for more information.

341

NutsMETRICHex Flange Nuts

METRIC - HEX FLANGE NUTS, STYLE 1 ISO 4161


F G H B


CornersNut Thickness

FlangeDiameter

Max Min Min Max Min Max

M5 0.8 8.00 7.78 8.79 5 4.7 11.8

M6 1 10.00 9.78 11.05 6 5.7 14.2

M8 1.25 13.00 12.73 14.38 8 7.6 17.9

M10 1.5 15.00 14.73 16.64 10 9.6 21.8

M12 1.75 18.00 17.73 20.03 12 11.6 26

M16 2 24.00 23.67 26.75 16 15.3 34.5

M20 2.5 30.00 29.16 32.95 20 18.9 42.8

Description Hex nut with an enlarged circular base flaring out from the bottom of the nut. The bearing surface of the flange is smooth.


Larger bearing surface will span oversized or poorly aligned holes. Flange provides a more uniform bearing-stress to clamp-force ratiothan other low carbon lock nuts.

Material

Class 8 nuts shall be made of a steel which conforms to thefollowing chemical composition-- Carbon: 0.58% maximum;

Manganese: 0.25% minimum; Phosphorus: 0.060% maximum;Sulfur: 0.150% maximum.

Class 10 nuts shall be made of a steel which conforms to thefollowing chemical composition-- Carbon: 0.58% maximum;

Manganese: 0.30% minimum; Phosphorus: 0.048% maximum;Sulfur: 0.058% maximum.

Hardness Diameters M5 through M16: Vickers HV 200 - 302Diameter M20: Vickers HV 233 - 353

Diameters M5 through M20: Vickers HV 272 - 353

Proof Load




Diameter M20: 920 N/mm2

Diameters M4 through M10: 1,040 N/mm2

Diameters M12 through M16: 1,050 N/mm2

Diameter M20: 1,060 N/mm2


342

Nuts METRIC Malleable CastWing Nuts

Description A nut with a metric thread pitch and two wings protruding 180° from each other which allows the part to be manually turned.


Wing nuts are used when a part is frequently assembled and disassembled at a place where torque greater than that achieved withfinger pressure is not needed. The malleable style nut has been the most common type wing nut used in Europe for many years.

Material Malleable iron casting


METRIC - MALLEABLE CAST WING NUTS DIN 315

D

Thread Pitch

A E H

Nominal DiameterBoss Diameter Wing Spread Wing Height

Max Max Max

M4 0.70 8 20 10.5

M5 0.80 11 26 13

M6 1 13 33 17

M8 1.25 16 39 20

M10 1.50 20 51 25

M12 1.75 23 65 33.5

M14 2 29 73 37.5

M16 2 29 73 37.5

M20 2.5 35 90 46.5

E

H

E

D

A

343

C

B

A

E

METRIC NutsCold-ForgedWing Nuts

METRIC - COLD FORMED WING NUTS, CLASS 5 DIN 3155

Nominal Size Thread PitchA B C E

Wing Spread Wing Height Wing Thickness Boss Diameter

M3 0.50 17.60 8.60 1.60 8

M4 0.70 17.60 8.60 1.60 8

M5 0.80 22.50 11 2.10 10.30

M6 1 27.80 13.60 2.50 12.70

M8 1.25 30.30 14.80 2.80 13.80

M10 1.50 36.20 17.70 3.30 16.50

M12 1.75 49.40 24.10 4.50 22.50

Description A nut with a metric thread pitch and wings set 180° apart from each other which allows the part to be manually turned.


Class 5 metric cold-forged wing nuts are used when a part is frequently assembled and disassembled at a place where torque greaterthan that achieved with finger pressure is not needed. The cold-forged style nut has been more popular in the United States, especially

in the automotive aftermarket. It can also be safer to use than a malleable wing nut which can have sharp burrs that must be fileddown prior to installation.

Material Class 5 metric cold-forged nuts shall be made of a steel which conforms to the following chemical composition--Carbon: 0.50% maximum; Phosphorus: 0.060% maximum; Sulfur: 0.150% maximum.

Hardness Rockwell B89 - C30 (Vickers HV 130 - 302)


344

Nuts METRIC Domed HexCap Nut

G

FA

H

QT

METRIC - DOMED CAP (ACORN) NUTS, CLASS 6 DIN 1587


F G H T Q

Width AcrossFlats

Width AcrossCorners Overall Height Drill Depth Hexagon Height

Ref Min Ref Ref Ref

M3 0.50 5.50 6.08 6 3.80 3

M4 0.70 7 7.74 8 5.50 4

M5 0.80 8 8.87 10 7.50 5

M6 1 10 11.05 12 8 5

M8 1.25 13 14.38 15 11 6.50

M10 1.50 17 18.90 18 13 8

M12 1.75 19 21.10 22 16 10

M16 2 24 26.75 28 21 13

M20 2.5 30 33.53 34 26 16

M24 3 36 39.98 42 31 19

Description A one-piece hex nut, milled-from-the-bar, with a dome-shaped top (similar in shape to an acorn) and a threaded hole at the oppositeend.


Cap nuts serve two main purposes: (1) as decorative pieces, and (2) as covers for projecting threads.

MaterialClass 6 cap nuts shall be made from a low-carbon steel which conforms to the following chemical composition requirements--

Carbon: 0.50% max.; Phosphorus: 0.060% max.; Sulfur: 0.150% max..

Hardness M3 - M16: Vickers HV 150 - 302 (Rockwell B 78.7 - C 30)over M16 - M24: Vickers HV 170 - 302 (Rockwell B 85 - C 30)

Plating See Appendix-A for information about the plating of steel cap nuts.

345

NutsMETRICInternalThreads

Min.Major

Diameter

MinorDiameter

PitchLine

Axis of internal thread

INTERNAL THREADS, CLASS 6H DIN 13; ISO 68& ISO R 1501

Nominal SizeNormal Engagement Length Major Diameter Pitch Diameter Minor Diameter

From To Min Min Max Min Max

M1.6 0.8 2.6 1.600 1.373 1.458 1.221 1.321

M2 1 3 2.000 1.740 1.830 1.567 1.679

M2.5 1.3 3.8 2.500 2.208 2.303 2.013 2.138

M3 1.5 4.5 3.000 2.675 2.775 2.459 2.599

M4 2 6 4.000 3.545 3.663 3.242 3.422

M5 2.5 7.5 5.000 4.480 4.605 4.134 4.334

M6 3 9 6.000 5.350 5.500 4.917 5.153

M8 4 12 8.000 7.188 7.348 6.647 6.912

M10 5 15 10.000 9.026 9.206 8.376 8.676

M12 6 18 12.000 10.863 11.063 10.106 10.441

M14 8 24 14.000 12.701 12.913 11.835 12.210

M16 8 24 16.000 14.701 14.913 13.835 14.210

M20 10 30 20.000 18.376 18.600 17.294 17.744

M24 12 36 24.000 22.051 22.316 20.752 21.252

M30 15 45 30.000 27.727 28.007 26.211 26.771

M36 18 53 36.000 33.402 33.702 31.670 32.270

M42 21 63 42.000 39.077 39.392 37.129 37.799

M48 24 71 48.000 44.752 45.087 42.587 43.297

M56 28 85 56.000 52.428 52.783 50.046 50.796

M64 32 95 64.000 60.103 60.478 57.505 58.305

346

Washers METRIC StandardFlat Washers

METRIC - STANDARD FLAT WASHERS (NORMAL SERIES, GRADE A) ISO 7089

Nominal Size

ID OD T

Internal Diameter Outside Diameter Thickness

Max Min Max Min Max Min

1.6 1.84 1.7 4 3.7 0.35 0.25

2 2.34 2.2 5 4.7 0.35 0.25

2.5 2.84 2.7 6 5.7 0.55 0.45

3 3.38 3.2 7 6.64 0.55 0.45

3.5 3.88 3.7 8 7.64 0.55 0.45

4 4.48 4.3 9 8.64 0.9 0.7

5 5.48 5.3 10 9.64 1.1 0.9

6 6.62 6.4 12 11.57 1.8 1.4

8 8.62 8.4 16 15.57 1.8 1.4

10 10.77 10.5 20 19.48 2.2 1.8

12 13.27 13 24 23.48 2.7 2.3

14 15.27 15 28 27.48 2.7 2.3

16 17.27 17 30 29.48 3.3 2.7

20 21.33 21 37 36.38 3.3 2.7

24 25.33 25 44 43.38 4.3 3.7

30 31.39 31 56 55.26 4.3 3.7

36 37.62 37 66 64.8 5.6 4.4

ID OD

TH

Steel Stainless

Description A thin, flat circular part with a centrally located hole. Class 300 HV washers are also hardened and tempered.


Washers are for assembly around a bolt or screw, between thebearing surface of the fastener and the part to which it is

attached. Flat washers are used to improve stress distribution,and to span large clearance holes.

Class 140 HV & Class 200 HV metric washers meet the majorityof industrial applications in manufacturing, maintenance and

repair.Class 300 HV metric washers are best suited for use with

through-hardened cap-screws, bolts and nuts.

Washers are for assembly around a bolt or screw, between thebearing surface of the fastener and the part to which it is attached.Flat washers are used to improve stress distribution, and to span

large clearance holes.Stainless washers are for use with austenitic stainless steel screwsand nuts in general industrial applications where parts are subject

to corrosion.

Material Low or medium carbon steel Austenitic stainless steel

HardnessClass 140 HV: HV 140 minimum (Rockwell B 75 minimum)

Class 200 HV: HV 200-300 (Rockwell B 91.5 - C 29.8)Class 300 HV: HV 300-400 (Rockwell C 29.8 - 40.8)

Class A 140: HV 140 minimum (Rockwell B 75 minimum)Class A 200: HV 200-300 (Rockwell B 91.5 - C 29.8)

Class A 350: HV 350-400 (Rockwell C 35.5 - 40.8)

Plating See Appendix-A for information about the plating of flat washers.

347

METRIC - FLAT WASHERS, WIDER I.D. (NORMAL SERIES, GRADE C) ISO 7091

Nominal Size

ID OD T



5 5.8 5.5 10 9.1 1.2 0.8

6 6.96 6.6 12 10.9 1.9 1.3

8 9.36 9 16 14.9 1.9 1.3

10 11.43 11 20 18.7 2.3 1.7

12 13.93 13.5 24 22.7 2.8 2.2

14 15.93 15.5 28 26.7 2.8 2.2

16 17.93 17.5 30 28.7 3.6 2.4

20 22.52 22 37 35.4 3.6 2.4

24 26.52 26 44 42.4 4.6 3.4

30 33.62 33 56 54.1 4.6 3.4

36 40 39 66 64.1 6 4

METRIC WashersFlat Washers -Wider I.D.

ID OD

TH

Description A thin, flat circular part with a centrally located hole which is approximately 6% wider than the hole of a like-sized standard metric flatwasher.


Washers are for assembly around a bolt or screw, between the bearing surface of the fastener and the part to which it is attached. Flatwashers are used to improve stress distribution, and to span large clearance holes. The wider-ID style is ideal for use with bolts which

have over-sized shoulder or body diameters.

Material Low or medium carbon steel

Hardness HV 100 minimum (Rockwell B 56.2 minimum)


348

Washers METRIC Flat WashersLarge O.D.

METRIC - FLAT WASHERS, LARGE O.D. (LARGE SERIES, GRADES A & C) ISO 7093

Nominal Size

ID OD T



3 3.38 3.2 9 8.64 0.9 0.7

3.5 3.88 3.7 11 10.57 0.9 0.7

4 4.48 4.3 12 11.57 1.1 0.9

5 5.48 5.3 15 14.57 1.4 1

6 6.62 6.4 18 17.57 1.8 1.4

8 8.62 8.4 24 23.48 2.2 1.8

10 10.77 10.5 30 29.48 2.7 2.3

12 13.27 13 37 36.38 3.3 2.7

14 15.27 15 44 43.38 3.3 2.7

16 17.27 17 50 49.38 3.3 2.7

20 22.52 22 60 58.1 4.6 3.4

24 26.84 26 72 70.1 6 4

30 34 33 92 89.8 7 5

36 40 39 110 107.8 9.2 6.8

ID OD

TH

Steel Stainless

Description A thin, flat circular part with a centrally located hole with outside diameter three times the nominal thread diameter of the bolt to beused with it. Class 300 HV washers are also hardened and tempered.


Washers are for assembly around a bolt or screw, between thebearing surface of the fastener and the part to which it is attached.Flat washers are used to improve stress distribution, and to spanlarge clearance holes. This style washer is most similar to inch-

sized fender washers.

Washers are for assembly around a bolt or screw, between thebearing surface of the fastener and the part to which it is attached.Flat washers are used to improve stress distribution, and to spanlarge clearance holes. This style washer is most similar to inch-

sized fender washers.Stainless washers are for use with austenitic stainless steel screwsand nuts in general industrial applications where parts are subject

to corrosion.


Hardness Grade A: HV 140 minimum (Rockwell B75 minimum)Grade C: HV 100 minimum (Rockwell B56.2 minimum) HV 140 minimum (Rockwell B75 minimum)


349

METRIC WashersFlat Washers -Small O.D.

ID OD

TH

Steel Stainless

Description

A thin, flat circular part with a centrally located hole. The outsidediameter of this variety washer is approximately 7-12% smaller

than that of a like-sized standard flat washer. Class 300 HVwashers are also hardened and tempered.

A thin, flat circular part with a centrally located hole. The outsidediameter of this variety washer is approximately 7-12% smaller

than that of a like-sized standard flat washer.


Washers are for assembly around a bolt or screw, between thebearing surface of the fastener and the part to which it is attached.Flat washers are used to improve stress distribution, and to spanlarge clearance holes. The small outside diameter variety is used

in applications with limited clearance areas on the bearing surface.Class 140 HV & Class 200 HV metric washers meet the majority

of industrial applications in manufacturing, maintenance andrepair.

Class 300 HV metric washers are best suited for use with through-hardened cap-screws, bolts and nuts.

Washers are for assembly around a bolt or screw, between thebearing surface of the fastener and the part to which it is attached.Flat washers are used to improve stress distribution, and to span

large clearance holes. The small outside diameter variety is used inapplications with limited clearance areas on the bearing surface.

Stainless washers are for use with austenitic stainless steel screwsand nuts in general industrial applications where parts are subject

to corrosion.


HardnessClass 140 HV: HV 140 minimum (Rockwell B 75 minimum)

Class 200 HV: HV 200-300 (Rockwell B 91.5 - C 29.8)Class 300 HV: HV 300-400 (Rockwell C 29.8 - 40.8)

Class A 140: HV 140 minimum (Rockwell B 75 minimum)Class A 200: HV 200-300 (Rockwell B 91.5 - C 29.8)Class A 350: HV 350-400 (Rockwell C 35.5 - 40.8)


METRIC - FLAT WASHERS, SMALL O.D. (SMALL SERIES , GRADE A) ISO 7092

Nominal Size

ID OD T



1.6 1.84 1.7 3.5 3.2 0.35 0.25

2 2.34 2.2 4.5 4.2 0.35 0.25

2.5 2.84 2.7 5 4.7 0.55 0.45

3 3.38 3.2 6 5.7 0.55 0.45

3.5 3.88 3.7 7 6.64 0.55 0.45

4 4.48 4.3 8 7.64 0.55 0.45

5 5.48 5.3 9 8.64 1.1 0.9

6 6.62 6.4 11 10.57 1.8 1.4

8 8.62 8.4 15 14.57 1.8 1.4

10 10.77 10.5 18 17.57 1.8 1.4

12 13.27 13 20 19.48 2.7 2.3

14 15.27 15 24 23.48 2.7 2.3

16 17.27 17 28 27.48 2.7 2.3

20 21.33 21 34 33.38 3.3 2.7

24 25.33 25 39 38.38 4.3 3.7

30 31.33 31 50 49.38 4.3 3.7

36 37.62 37 60 58.8 5.6 4.4

350

Washers METRIC External ToothLockwasher

B

AC

Description A hardened circular washer with twisted prongs or "teeth" which extend out from the outer edge of the washer.


This is the most preferable of all tooth-lock washers. It offers the greatest locking efficiency since the teeth are on the largestradius and provide greater torsional resistance.

Material Spring steel

Hardness Rockwell C41 - 47

Plating See Appendix-A for information on the plating of steel lock washers.

METRIC - EXTERNAL TOOTH LOCKWASHERDIN 6797 A;JIS B 1255

Nominal Size

A B CPreferred

Number ofTeeth*

Inside Diameter Outside Diameter Thickness


M3 3.4 3.2 6.5 6.1 0.485 0.415 8

M3.5 3.9 3.7 7.5 7.1 0.485 0.415 8

M4 4.5 4.3 8.5 8.1 0.485 0.415 9

M5 5.5 5.3 10 9.6 0.64 0.56 10

M6 6.7 6.4 11 10.5 0.64 0.56 12

M8 8.7 8.4 15 14.5 0.85 0.75 12

M10 10.9 10.5 18 17.5 0.95 0.85 12

M12 12.9 12.5 21 20.4 1.055 0.945 12

M14 14.9 14.5 23 22.4 1.055 0.945 12

M16 16.9 16.5 26 25.4 1.265 1.135 14

M20 21.5 21 32 31.2 1.47 1.33 14

* Slight deviation from the preferred number of teeth is permitted.

351

BA

C

Description A hardened circular washer with twisted prongs or "teeth" which extend inward from the inside edge of the washer.


This is preferred when finished appearance is crucial and the teeth must be hidden under the head of the screw; also recommendedfor use with small heads such as fillisters.




METRIC - INTERNAL TOOTH LOCKWASHERSDIN 6797 J;JIS B 1255

Nominal Size

A B CPreferred

Number ofTeeth*



M2 2.4 2.2 4.8 4.5 0.325 0.275 7

M2.5 2.9 2.7 5.7 5.4 0.325 0.275 7

M3 3.4 3.2 6.5 6.1 0.485 0.415 8

M3.5 3.9 3.7 7.5 7.1 0.485 0.415 8

M4 4.5 4.3 8.5 8.1 0.485 0.415 8

M5 5.5 5.3 10 9.6 0.64 0.56 8

M6 6.7 6.4 11 10.5 0.64 0.56 9

M8 8.7 8.4 15 14.5 0.85 0.75 9

M10 10.9 10.5 18 17.5 0.95 0.85 9

M12 12.9 12.5 21 20.4 1.055 0.945 10

M14 14.9 14.5 23 22.4 1.055 0.945 10

M16 16.9 16.5 26 25.4 1.265 1.135 12

M20 21.5 21 32 31.2 1.47 1.33 12

METRIC WashersInternal ToothLockwasher


352

Washers METRIC Countersunk ExternalTooth Lockwasher

B

A

C

80˚-82˚

D

Description An external tooth lock washer with a conical shaped bearing surface.

Applications/Advantages Designed for use with flat or oval head metric screws with countersunk angles of 82° or 100°.





METRIC - COUNTERSUNK EXTERNAL TOOTH LOCKWASHERSDIN 6797 V;JIS B 1255

Nominal Size

A B C DPreferredNumber of

Teeth*Inside Diameter Outside

DiameterThickness Length

Max Min Approx Max Min Max

M3 3.4 3.2 6 0.43 0.37 1.8 8

M4 4.5 4.3 8 0.43 0.37 2.5 8

M5 5.5 5.3 10 0.535 0.465 3.1 9

M6 6.7 6.4 12 0.535 0.465 3.8 10

M8 8.7 8.4 16 0.64 0.56 5.1 12

353

BA

C

Description A hardened circular washer with twisted prongs or teeth protruding from both the inside and outer edges of the washer.


Preferred lockwasher for use with metric screws in the following situations: (1) where a larger bearing surface is desired; (2) for anoptimum electrical connection; (3) where the hole is oversized or out of round; (4) as an insert between two adjustable pieces

where a longitudinal or rotational adjustment must be maintained.


Hardness Rockwell C 36 - 42

Plating See Appendix-A for information about the plating of steel lock washers.

METRIC - INTERNAL EXTERNAL TOOTH LOCKWASHERSDIN 6999 D;

JIS B 1255

Nominal Size

A B CPreferred Number of Teeth*


Max Min Max Min Max Min Internal External

M4 4.5 4.3 15 14.5 0.64 0.56 8 12

M5 5.5 5.3 15 14.5 0.64 0.56 8 12

M6 6.7 6.4 17.5 17.0 0.85 0.75 9 12

M8 8.7 8.4 22.5 21.9 0.95 0.85 9 12

M10 10.9 10.5 26 25.4 1.055 0.945 9 14

M12 12.9 12.5 29 28.4 1.055 0.945 10 14

M14 14.9 14.5 32 31.2 1.265 1.135 10 14

M16 16.9 16.5 35 34.2 1.47 1.33 12 16

METRIC WashersCombination External-Internal Tooth Lockwasher


354

Washers METRIC Regular SplitLockwasher

METRIC - SPLIT LOCKWASHERS DIN 127B

Nominal Washer Size

A B T W

Inside Diameter Outside Diameter Section Thickness Section Width

Max Min Ref Ref Ref

M2 2.4 2.1 4.4 0.50 0.9

M2.5 2.9 2.6 5.1 0.60 1

M3 3.4 3.1 6.2 0.80 1.3

M4 4.4 4.1 7.6 0.90 1.5

M5 5.4 5.1 9.2 1.20 1.8

M6 6.5 6.1 11.8 1.60 2.5

M8 8.5 8.1 14.8 2 3

M10 10.7 10.2 18.1 2.2 3.5

M12 12.7 12.2 21.1 2.5 4

M16 17.0 16.2 27.4 3.5 5

M20 21.2 20.2 33.6 4 6

M24 25.5 24.5 40 5 7

M30 31.7 30.5 48.2 6 8

M36 37.7 36.5 58.2 6 10

M42 43.7 42.5 68.2 7 12

M48 50.5 49 75 7 12

Description A coiled, hardened, split circular washer with a slightly trapezoidal wire section, for use with metric screws.


(A) Applies greater bolt tension per unit of applied torque; (B) Provides a hardened bearing surface, creating more uniform torquecontrol; (C) Provides more uniform load distribution; (D) Resists loosening caused by vibration and corrosion;

(E) Is preferred lockwasher for use with hardened bearing surfaces.



Plating See Appendix-A for information about the plating of carbon steel and alloy steel lock washers.

W

T A B

355

METRIC WashersCurved SpringLockwasher

Description A coiled, hardened, split circular washer with a wave-shaped wire section, for use with metric screws.


Offers more resistance to vibration than helical split lock washers. Can be used in both left hand and right hand boltingconnections.



Plating See Appendix-A for information about the plating of carbon steel and alloy steel lock washers.

A B

T

W

RC

C<T min.

C

HH

METRIC - CURVED SPRING LOCKWASHERSDIN 128A

& 128B

NominalWasher

Size

A B H W T R

Inside DiameterOutsideDiameter Total Wave Height Section Width Section Thickness Radius

Max Min Max Max Min Max Min Max Min Ref

M2 2.4 2.1 4.4 0.9 0.7 1.0 0.8 0.6 0.4 0.1

M2.3 2.7 2.4 4.9 1.1 0.9 1.1 0.9 0.7 0.5 0.1

M2.5 2.9 2.6 5.1 1.1 0.9 1.1 0.9 0.7 0.5 0.1

M2.6 3.0 2.7 5.2 1.1 0.9 1.1 0.9 0.7 0.5 0.1

M3 3.4 3.1 6.2 1.3 1.1 1.4 1.2 0.8 0.6 0.1

M3.5 3.9 3.6 6.7 1.3 1.1 1.4 1.2 0.8 0.6 0.1

M4 4.4 4.1 7.6 1.4 1.2 1.6 1.4 0.9 0.7 0.2

M5 5.4 5.1 9.2 1.7 1.5 1.9 1.7 1.1 0.9 0.2

M6 6.5 6.1 11.8 2.2 2.0 2.65 2.35 1.4 1.2 0.3

M7 7.5 7.1 12.8 2.2 2.0 2.65 2.35 1.4 1.2 0.3

M8 8.6 8.2 14.9 2.75 2.45 3.15 2.85 1.7 1.5 0.5

M10 10.7 10.2 18.1 3.15 2.85 3.7 3.3 1.9 1.7 0.5

356

Sockets METRIC Socket CapScrews

METRIC - SOCKET HEAD CAP SCREWS, CLASS 12.9 ISO 4762

BasicScrew

Diameter

ThreadPitch

D H K C F S E T W

Body DiameterHead

DiameterHead Height

TopChamfer

or Radius


Socket SizeAcross the Flats

Socket SizeAcross the

Corners

KeyEngage-

ment

WallThick--ness

Max Min Max Min Max Min Max Max Max Min Min Min Min

M1.6 0.35 1.60 1.46 3.14 2.86 1.60 1.46 0.16 2 1.545 1.520 1.73 0.7 0.55

M2 0.4 2.00 1.86 3.98 3.62 2.00 1.86 0.2 2.6 1.545 1.520 1.73 1 0.55

M2.5 0.45 2.50 2.36 4.68 4.32 2.50 2.36 0.25 3.1 2.045 2.020 2.3 1.1 0.85

M3 0.5 3.00 2.86 5.68 5.32 3.00 2.86 0.3 3.6 2.56 2.52 2.87 1.3 1.15

M4 0.7 4.00 3.82 7.22 6.78 4.00 3.82 0.4 4.7 3.071 3.020 3.44 2 1.4

M5 0.8 5.00 4.82 8.72 8.28 5.00 4.82 0.5 5.7 4.084 4.020 4.58 2.5 1.9

M6 1 6.00 5.82 10.22 9.78 6.00 5.7 0.6 6.8 5.084 5.020 5.72 3 2.3

M8 1.25 8.00 7.78 13.27 12.73 8.00 7.64 0.8 9.2 6.095 6.020 6.86 4 3.3

M10 1.5 10.00 9.78 16.27 15.73 10.00 9.64 1 11.2 8.115 8.025 9.15 5 4

M12 1.75 12.00 11.73 18.27 17.73 12.00 11.57 1.2 13.7 10.115 10.025 11.43 6 4.8

M16 2 16.00 15.73 24.33 23.67 16.00 15.57 1.6 17.7 14.142 14.032 16 8 6.8

M20 2.5 20.00 19.67 30.33 29.67 20.00 19.48 2 22.4 17.23 17.05 19.44 10 8.6

M24 3 24.00 23.67 36.39 35.61 24.00 23.48 2.4 26.4 19.275 19.065 21.73 12 10.4

M30 3.5 30.00 29.67 45.39 44.61 30.00 29.48 3 33.4 22.275 22.065 25.15 15.5 13.1

M36 4 36.00 35.61 54.46 53.54 36.00 35.38 3.6 39.4 27.275 27.065 30.85 19 15.3

M42 4.5 42.00 41.61 63.46 62.54 42.00 41.38 4.2 45.6 32.33 32.08 36.57 24 16.3

M48 5 48.00 47.61 72.46 71.54 48.00 47.38 4.8 52.6 36.33 36.08 41.13 28 17.5

M56 5.5 56.00 55.54 84.54 83.46 56.00 55.26 5.6 63 41.33 41.08 46.83 34 19

M64 6 64.00 63.54 96.54 95.46 64.00 63.26 6.4 71 46.33 46.08 52.53 38 22

Tolerance on Length2.5-3mm: ±0.2 4-6mm: ±0.24 8-10mm: ±0.29 12-16mm: ±0.35 20-30mm: ±0.42

35-50mm: ±0.5 55-80mm: ±0.6 90-120mm: ±0.7 130-180mm: ±0.8 200-240mm: ±0.925 260-300mm: ±1.05

K

H

W

D

F

T S

E

C

Description An externally threaded fastener with metric threads, a cylindrical head with a flat chamfered top surface, knurled cylindrical sides andhexagonal recess, made from alloy steel.


Class 12.9 socket cap screws are comparable, but not exactly equivalent to U.S. alloy steel socket cap screws. Ideal for precision assemblywork with close tolerances and applications needing a well-tooled appearance. Supplies greater tensile strength than equivalent sizes of

Class 8.8 or 10.9 hex head cap screws while requiring less surface area or conterbore since the fastener is internally wrenched.

MaterialClass 12.9 socket cap screws shall be made from an alloy steel which conforms to the following chemical composition requirements--

Carbon: 0.20-0.50%; Phosphorous: 0.035% maximum; Sulfur: 0.035% maximum; and one or more of chromium, nickel, molybdenum orvanadium.

Heat Treatment Class 12.9 socket cap screws shall be heat treated by quenching in oil from above the transformation temperature and reheating to atempering temperature of 380°C minimum.

Hardness Rockwell C 39 - 44 (Vickers HV 385 - 435)




Plating Metric Class 12.9 socket cap screws are usually supplied with a plain, black finish.

357

Description Has a similar design as a metric socket button head screw but has an 82° countersunk flat head.


Used when a flush mounting, high strength screw is required. Commonly used in tools and dies where moving parts pass over thefastened area.

Material Class 10.9 socket flat head cap screws shall be made from an alloy steel which conforms to the following chemical compositionrequirements-- Carbon: 0.28-0.50%; Phosphorous: 0.035% maximum; Sulfur: 0.035% maximum.

Heat Treatment Class 10.9 socket flat head cap screws shall be heat treated by quenching in oil from above the transformation temperature andreheating to a tempering temperature of 380°C minimum.


Tensile Strength Full-size screws: 1040 MPa minimum; Machined test specimen: 1220 MPa minimum

Yield Strength Machined test specimen: 1100 MPa minimum

Elongation in 5D 8% minimum

Reduction of Area 35% minimum

Plating Metric class 10.9 socket flat head cap screws are usually supplied with a plain finish.

T

90˚

H

A J

L

LT

METRIC SocketsFlat HeadSocket Cap Screws

METRIC - FLAT HEAD SOCKET CAP SCREWS, CLASS 10.9 ANSI/ASMEB18.3.5M

NominalSize

ThreadPitch

B A H J T W D

Body Diameter Head Diameter Head HeightHex

SocketSize

KeyEngage-

ment

WallThickness

DrillAllowance

Max Min TheoreticalSharp

AbsoluteMin.

RefFlush

ToleranceNom Min Min Max

M3 0.5 3.00 2.86 6.72 5.35 1.86 0.30 2.0 1.1 0.25 0.3

M4 0.7 4.00 3.82 8.96 7.80 2.48 0.30 2.5 1.5 0.45 0.4

M5 0.8 5.00 4.82 11.20 9.75 3.10 0.35 3.0 1.9 0.66 0.5

M6 1 6.00 5.82 13.44 11.70 3.72 0.35 4.0 2.2 0.70 0.6

M8 1.25 8.00 7.78 17.92 15.60 4.96 0.40 5.0 3.0 1.16 0.8

M10 1.5 10.00 9.78 22.40 19.50 6.20 0.50 6.0 3.6 1.62 0.9

Tolerance on Length Up to 16mm, incl.: ±0.3 Over 16mm to 60mm, incl.: ±0.5 Over 60mm to 150mm, incl.: ±0.8

358

Cone PointMETRIC Socket Set ScrewsSockets

METRIC - SOCKET SET SCREWS, CONE POINT ISO 4027 & 898/5

NominalSize

ThreadPitch

C E SScrews

Below thisLength areShort Sizes

TMin Length

of Screwfor Torque

Test

TestTorquePoint

Diameter

Socket SizeAcrossCorners


Key Engagement (Min)

Max Min Max Min Short Sizes Long Sizes N. m

M1.6 0.35 0.4 0.803 0.724 0.711 3 0.7 1.5 - -

M2 0.4 0.5 1.003 0.902 0.889 3 0.8 1.7 - -

M2.5 0.45 0.65 1.427 1.295 1.270 4 1.2 2 - -

M3 0.5 0.75 1.73 1.545 1.520 4 1.2 2 5 0.9

M4 0.7 1 2.3 2.045 2.020 5 1.5 2.5 6 2.5

M5 0.8 1.25 2.87 2.560 2.520 6 2 3 8 5

M6 1 1.5 3.44 3.071 3.020 8 2 3.5 8 8.5

M8 1.25 2 4.58 4.084 4.020 10 3 5 10 20

M10 1.5 2.5 5.72 5.084 5.020 12 4 6 12 40

M12 1.75 3 6.86 6.095 6.020 16 4.8 8 16 65

M16 2 4 9.15 8.115 8.025 20 6.4 10 20 160

M20 2.5 5 11.43 10.115 10.025 25 8 12 20 310

M24 3 6 13.72 12.142 12.032 30 10 15 25 520


20-30mm: ±0.42 35-50mm: ±0.5 55-60mm: ±0.6

Description A headless screw threaded the entire length with a metric thread pitch. It has a sharp conical-shaped point at the opposite end fromthe hexagonal drive.


Cone point set screws are for permanent setting on soft or hardened shafts. The deep penetration it offers gives this style set screwthe highest torsional & axial holding power. Can also be used as a pivot or hanger.

MaterialMetric socket set screws shall be made from an alloy steel which conforms to the following chemical composition requirements--

Carbon: 0.19-0.50%; Phosphorous: 0.05% maximum; Sulfur: 0.05% maximum; Lead: 0.35% maximum. Set screws shall also containone or more of these following elements: chromium, nickel, molybdenum, vanadium or boron.

Heat Treatment Metric socket set screws shall be heat treated by quenching in oil from above the transformation temperature and then tempered byreheating to meet the hardness requirements listed below.

Hardness Rockwell HRC 45 - 53 (Vickers HV 450 - 560)

Torsional Strength Metric socket set screws of a sufficient length to be tested (as listed in the above table) shall withstand application of the test torquespecified in said table without evidence of the socket reaming or the screw bursting.

Plating Metric socket set screws are usually supplied with a thermal black finish.

T

CONE POINT

E

S

C

90(120 for short sizes)

o

o

120 for short sizes90 for all other sizes

o

o

359

T

C

FLAT POINT

E

S


o

o

Description A headless screw threaded the entire length with a metric thread pitch. It has a flat surface at the end opposite that of the hexagonaldrive.


Flat point set screws are designed for frequent resetting or relocating on hard steel shafts and where minimal damage to shafts is aconcern.







SocketsMETRIC Socket Set ScrewsFlat Point

METRIC - SOCKET SET SCREW, FLAT POINT ISO 4026 & 898/5

NominalSize

ThreadPitch

C E SScrews


TMin Length

of Screwfor Torque

Test

TestTorquePoint Diameter




Max Min Min Max Min Short Sizes Long Sizes N. m

M1.6 0.35 0.80 0.55 0.803 0.724 0.711 2.5 0.7 1.5 - -

M2 0.4 1.00 0.75 1.003 0.902 0.889 3 0.8 1.7 - -

M2.5 0.45 1.50 1.25 1.427 1.295 1.270 4 1.2 2 - -

M3 0.5 2.00 1.75 1.73 1.545 1.520 4 1.2 2 4 0.9

M4 0.7 2.50 2.25 2.3 2.045 2.020 5 1.5 2.5 5 2.5

M5 0.8 3.5 3.2 2.87 2.560 2.520 6 2 3 5 5

M6 1 4.0 3.7 3.44 3.071 3.020 8 2 3.5 8 8.5

M8 1.25 5.5 5.2 4.58 4.084 4.020 8 3 5 8 20

M10 1.5 7.00 6.64 5.72 5.084 5.020 10 4 6 10 40

M12 1.75 8.50 8.14 6.86 6.095 6.020 16 4.8 8 16 65

M16 2 12.00 11.57 9.15 8.115 8.025 20 6.4 10 20 160

M20 2.5 15.00 14.57 11.43 10.115 10.025 20 8 12 20 310

M24 3 18.00 17.57 13.72 12.142 12.032 25 10 15 25 520


20-30mm: ±0.42 35-50mm: ±0.5 55-60mm: ±0.6

360

Sockets METRIC Socket Set Screws Cup Point

METRIC - SOCKET SET SCREWS, CUP POINT ISO 4029 & 898/5

NominalSize

ThreadPitch

C E SScrews


TMin Length

of Screwfor Torque

Test

TestTorquePoint Diameter




Max Min Min Max Min Short Sizes Long Sizes N. m

M1.6 0.35 0.80 0.55 0.803 0.724 0.711 2.5 0.7 1.5 - -

M2 0.4 1.00 0.75 1.003 0.902 0.889 3 0.8 1.7 - -

M2.5 0.45 1.20 0.95 1.427 1.295 1.270 4 1.2 2 - -

M3 0.5 1.40 1.15 1.73 1.545 1.520 5 1.2 2 4 0.9

M4 0.7 2.00 1.75 2.3 2.045 2.020 6 1.5 2.5 5 2.5

M5 0.8 2.50 2.25 2.87 2.560 2.520 6 2 3 6 5

M6 1 3.00 2.75 3.44 3.071 3.020 8 2 3.5 8 8.5

M8 1.25 5.0 4.7 4.58 4.084 4.020 10 3 5 10 20

M10 1.5 6.0 5.7 5.72 5.084 5.020 12 4 6 12 40

M12 1.75 8.00 7.64 6.86 6.095 6.020 16 4.8 8 16 65

M16 2 10.00 9.64 9.15 8.115 8.025 20 6.4 10 20 160

M20 2.5 14.00 13.57 11.43 10.115 10.025 25 8 12 25 310

M24 3 16.00 15.57 13.72 12.142 12.032 30 10 15 30 520


20-30mm: ±0.42 35-50mm: ±0.5 55-60mm: ±0.6

Description A headless screw threaded the entire length with a metric thread pitch. It has a hexagonal drive at one end and a cup-shapedindentation at the other end.


The cup point is the most popular type of set screw, designed for fast, permanent and semi-permanent location of parts on shafts withhardness differential of 10-15 Rockwell C points and where cutting in of cup edge on the shaft is acceptable.







C

CUP POINT

120˚

SLIGHT FLAT OR

ROUNDING PERMISSIBLE

E

S

T90

(120 for short sizes)o

o

361

Description A headless screw threaded the entire length with a metric thread pitch. It has a protruding tip with a flat surface at the end oppositethat of the hexagonal drive..


Dog point set screws are intended for permanent setting. The point should fit closely to the diameter of the drilled hole or against theflat. Often used instead of a dowel pin.







Dog Point METRIC Socket Set Screws Sockets

METRIC - SET SCREWS, DOG POINT ISO 4028 & 898/5

NominalSize

ThreadPitch

P E S

ScrewsBelow thisLength are

ShortSizes

T ZMin

Lengthof Screw

forTorque

Test

TestTorquePoint

Diameter

SocketSize

AcrossCorners


Flats

KeyEngagement

(Min)

Dog PointLength

(short sizes)

Dog PointLength

(long sizes)

Max Min Min Max Min ShortSizes

LongSizes Max Min Max Min N.m

M1.6 0.35 0.80 0.55 0.803 0.724 0.711 3 0.7 1.5 0.65 0.40 1.05 0.80 - -

M2 0.4 1.00 0.75 1.003 0.902 0.889 4 0.8 1.7 0.75 0.50 1.25 1.00 - -

M2.5 0.45 1.50 1.25 1.427 1.295 1.270 5 1.2 2 0.88 0.63 1.50 1.25 - -

M3 0.5 2.00 1.75 1.73 1.545 1.520 6 1.2 2 1.00 0.75 1.75 1.50 5 0.9

M4 0.7 2.50 2.25 2.3 2.045 2.020 8 1.5 2.5 1.25 1.00 2.25 2.00 6 2.5

M5 0.8 3.5 3.2 2.87 2.560 2.520 8 2 3 1.50 1.25 2.75 2.50 8 5

M6 1 4.0 3.7 3.44 3.071 3.020 10 2 3.5 1.75 1.50 3.25 3.00 8 8.5

M8 1.25 5.5 5.2 4.58 4.084 4.020 12 3 5 2.25 2.00 4.3 4.0 10 20

M10 1.5 7.00 6.64 5.72 5.084 5.020 16 4 6 2.75 2.50 5.3 5.0 12 40

M12 1.75 8.50 8.14 6.86 6.095 6.020 20 4.8 8 3.25 3.00 6.3 6.0 16 65

M16 2 12.00 11.57 9.15 8.115 8.025 25 6.4 10 4.3 4.0 8.36 8.00 20 160

M20 2.5 15.00 14.57 11.43 10.115 10.025 30 8 12 5.3 5.0 10.36 10.00 25 310

M24 3 18.00 17.57 13.72 12.142 12.032 35 10 15 6.3 6.0 12.43 12.00 30 520


20-30mm: ±0.42 35-50mm: ±0.5 55-60mm: ±0.6

T

DOG POINT

P

SLIGHT FILLET

PERMISSIBLEZ

SLIGHT CHAMFER OR

RADIUS PERMISSIBLE

E

S


o

o

362

Sockets METRIC

METRIC - SOCKET SHOULDER SCREWS ISO 7379

NominalSize

D H K E S

Shoulder Diameter Head Diameter Head HeightSocket Size

AcrossCorners

Hex Socket SizeAcross the Flats

Max Min Max Min Max Min Min Max Min

6.5 6.487 6.451 10.22 9.78 4.5 4.32 3.44 3.08 3.02

8 7.987 7.951 13.27 12.73 5.5 5.32 4.58 4.095 4.02

10 9.987 9.951 16.27 15.73 7 6.78 5.72 5.095 5.02

13 12.984 12.941 18.27 17.73 9 8.78 6.86 6.095 6.02

16 15.984 15.941 24.33 23.67 11 10.73 9.15 8.115 8.025

20 19.980 19.928 30.33 29.67 14 13.73 11.43 10.115 10.025

25 24.980 24.928 36.39 35.61 16 15.73 13.72 12.142 12.032

Description A hex socket screw with metric threads, an enlarged, unthreaded, cylindrical shoulder under the head, the diameter of which serves asthe basis for the derivation of the nominal size.


Class 12.9 socket shoulder screws are comparable, but not exactly equivalent to U.S. alloy steel socket cap screws. Intended forrotation or sliding applications such as pulley shafts, in punch and die work, or for use as a bearing pin.

MaterialClass 12.9 socket shoulder screws shall be made from an alloy steel which conforms to the following chemical composition

requirements-- Carbon: 0.20-0.50%; Phosphorous: 0.035% maximum; Sulfur: 0.035% maximum; and one or more of chromium,nickel, molybdenum or vanadium.

Heat TreatmentClass 12.9 socket shoulder screws shall be heat treated by quenching in oil from above the transformation temperature and reheating

to a tempering temperature of 380°C minimum.




Plating Metric Class 12.9 socket shoulder screws are usually supplied with a plain finish.

Socket ShoulderScrews

‡Length of a socket shoulder screw is measured from the underhead bearing surface to the plane of the shoulder at the threaded end.

‡

HT

K

SEE DETAIL Y

A D

SEE DETAIL Z

G

E

D1

L±.005

E

S

363

SocketsMETRICSocket ShoulderScrews

F

ENLARGED DETAIL Y ENLARGED DETAIL Z

I

THIS DIA NOT TO

EXCEED MAJOR

DIA OF THREAD

METRIC - SOCKET SHOULDER SCREWS (CONTINUED) ISO 7379

NominalSize

D1

ThreadPitch

E G I T A F

NominalThread Size

Thread LengthThread Neck

DiameterThread

Neck WidthKey

Engagement

ShoulderNeck

Diameter

ShoulderNeck Width

Max Min Max Min Max Min Min Max

6.5 M5 0.8 9.75 9.25 3.86 3.68 2 2.4 5.92 2.5

8 M6 1 11.25 10.75 4.58 4.40 2.5 3.3 7.42 2.5

10 M8 1.25 13.25 12.75 6.25 6.03 3.1 4.2 9.42 2.5

13 M10 1.5 16.40 15.60 7.91 7.69 3.7 4.9 12.42 2.5

16 M12 1.75 18.40 17.60 9.57 9.35 4.4 6.6 15.42 2.5

20 M16 2 22.40 21.60 13.33 12.96 5 8.8 19.42 2.5

25 M20 2.5 27.40 26.60 16.57 16.30 6.3 10 24.42 3

Tolerance on Length +0.25

364

Sockets METRIC Button HeadSocket Cap Screws

T

HF J

AS

L

C

W

METRIC - BUTTON HEAD SOCKET CAP SCREWS, CLASS 10.9 ISO 7380

NominalSize

ThreadPitch

A H C J T W S F

MinUltimateTensileLoad, N

HeadDiameter

Head Height

SocketSize

Acrossthe

Corners


Flats

KeyEngage-

ment

WallThick-ness

UnthreadedSection Under

the Head


Max Min Max Min Min Max Min Min Min Max Min Max

M3 0.5 5.7 5.4 1.65 1.40 2.3 2.045 2.020 1.04 0.2 1.0 0.5 3.6 4,910

M4 0.7 7.60 7.24 2.20 1.95 2.87 2.56 2.52 1.3 0.3 1.4 0.7 4.7 8,560

M5 0.8 9.50 9.14 2.75 2.50 3.44 3.071 3.020 1.56 0.38 1.6 0.8 5.7 13,800

M6 1 10.50 10.07 3.3 3.0 4.58 4.084 4.020 2.08 0.74 2 1 6.8 19,600

M8 1.25 14.00 13.57 4.4 4.1 5.72 5.084 5.020 2.6 1.05 2.50 1.25 9.2 35,700

M10 1.5 17.50 17.07 5.5 5.2 6.86 6.095 6.020 3.12 1.45 3.0 1.5 11.2 56,600

M12 1.75 21.00 20.48 6.60 6.24 9.15 8.115 8.025 4.16 1.63 3.50 1.75 14.2 82,400

M16 2 28.00 27.48 8.80 8.44 11.43 10.115 10.025 5.2 2.25 4 2 18.2 154,000

Tolerance on Length 6mm: ±.24 8-10mm: ±.29 12-16mm: ±.35 20-30mm: ±.42 35-50mm: ±.5

Description Has a similar thread design as a metric socket cap screw but is fully threaded to the head. The dome shaped head is wider and has alower profile than a socket cap screw.


Used when a wider bearing surface or a smoother, more finished appearance is desired, or in material too thin to accomodate acountersunk head. Button head cap screws do not afford the strength of socket head cap screws and are designed for light fastening

applications.

Material

Class 10.9 button head cap screws may be made from a carbon steel, which conforms to the following chemical compositionrequirements-- Carbon: 0.25-0.55%; Phosphorous: 0.035% maximum; Sulfur: 0.035% maximum.

Class 10.9 button head cap screws may be made from a carbon steel with additives such as Boron, Manganese or Chromium whichconforms to the following chemical composition requirements--

Carbon: 0.20-0.55%; Phosphorous: 0.035% maximum; Sulfur: 0.035% maximum.

Class 10.9 button head cap screws may be made from an alloy steel which contains one or more of the following: Chromium, Nickel,Molybdenum or Vanadium; and conforms to the following chemical composition requirements--

Carbon: 0.20-0.55%; Phosphorous: 0.035% maximum; Sulfur: 0.035% maximum.

Heat Treatment Class 10.9 button head cap screws shall be heat treated by quenching in oil from above the transformation temperature and reheatingto a tempering temperature of 425°C minimum.

Hardness Rockwell C 32 - 39 (Vickers HV 320 - 380)

Tensile Strength 1,040 N/mm2 minimum



Plating Metric Class 10.9 button head screws are usually supplied with a plain finish.

365

SocketsMETRICThread Dimensions

EXTERNAL THREADS FOR SOCKETS - CLASS 5g/6g ISO 965

Thread

Major Diameter Pitch Diameter Minor Diameter


M1.6 1.581 1.496 1.354 1.304 1.151 1.088

M2 1.981 1.886 1.721 1.668 1.490 1.421

M2.5 2.480 2.380 2.188 2.132 1.928 1.855

M3 2.980 2.874 2.655 2.595 2.367 2.288

M4 3.978 3.838 3.523 3.452 3.119 3.021

M5 4.976 4.826 4.456 4.381 3.995 3.889

M6 5.974 5.794 5.324 5.234 4.747 4.618

M8 7.972 7.760 7.160 7.065 6.438 6.295

M10 9.968 9.732 8.994 8.888 8.128 7.964

M12 11.966 11.701 10.829 10.711 9.819 9.634

M16 15.962 15.682 14.663 14.538 13.508 13.306

M20 19.580 19.623 18.334 18.202 16.891 16.663

M24 23.952 23.577 22.003 21.843 20.271 19.995

M30 29.974 29.522 27.674 27.504 26.653 25.348

M36 35.940 35.465 33.342 33.162 31.033 30.709

M42 41.937 41.437 39.014 38.824 36.416 36.053

M48 47.929 47.399 44.681 44.481 41.795 41.402

M56 55.925 55.365 52.353 52.141 49.177 48.753

M64 63.920 63.320 60.023 59.799 56.559 56.104

metric fasteners - kanebridge313 metric - phillips flat heads forself-tappingscrews iso 7050 nominal...

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