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Unbrako®

P

F Cetrochemical

asteners atalog

All information contained in this catalogue has been prepared to assist users in their requirements for Studbolts. The

information is based on International Fastener Standards. All such source material and information beyond the control

of Deepak fastener Ltd (DFL) is subject to change.

Whilst every care has been taken to ensure that all information and technical data is accurate, DFL will not be liable to

any customer that relies on any matter, fact or representation nor will it be liable for any subsequent damage or loss

resulting from the use of any information contained in this catalogue. Customers are advised to make their own enquiries

or seek independent advice regarding the fitness and suitability of the products listed.

The products listed in this catalogue might not be stocked at DFL at all times and customers are advised to enquire the

availability of the same. E. & O.E.

.

.

.

Deepak Fasteners through its Unbrako Division warrants that these products conform to industry standards

specified herein and will be free from defects in materials and workmanship. This warranty is expressly given in lieu of any

and all other express or implied warranties, including any implied warranty of merchantability or fitness for a particular

purpose, and in lieu of any other obligation on our part of DFL will at its option, repair or replace free of charge (excluding

all shipping and handling costs) any products which have not been subject to misuse, abuse, or modification and which in its

sole determination were not manufactured in compliance with the warranty given above.

The remedy provided herein shall be the exclusive remedy for any breach of warranty or any claim arising in any

way out of the manufacture, sale or use of these products. In no event shall Deepak Fasteners be liable for consequential,

incidental or any other damages of any nature whatsoever except those specifically provided herein for any breach of warranty

or any claim arising in any way of the manufacture, sale or use of these products. No other person is authorised by Deepak

Fasteners to give any other warranty, written or oral, pertaining to the products.

.

Disclaimer

Limited Warranty And Exclusive Remedy

Contents Pages

Quality And Reliability

Unbrako Studbolts Product Range

Studbolt Material Specification

Nut Material Specification

Influence Of Chemicals In Steel

Properties Of Steel

Dimensions Of Nuts

ASTM F436 Washer

Assembly & Tightening

Specialized Coating

Tightening Torques

Proof Load

Studbolt Sizes For Flanges

Product Weight

Certifications

About Unbrako

ASTM A-193/ASME SA-193

ASTM A-320 & ASTM A-307

ASTM A-194/ASME SA-194

Metric

Imperial

Metric

Imperial

Metric

Imperial

1

2

3

4-5

6

7

8

9

10-11

12

13

14

15

16-17

18

19-21

22

23

24-29

30-33

Unbrako®

Our Commitment To Quality

1

Founded in 1911, Unbrako has been a leader in advancing the

technology of bolted joints and meeting the needs of industry

for stronger and better performing fasteners. Products such as

the famous Unbrako® socket head cap screw and Durlok®

fasteners are the solutions of choice for engineering

applications across the world & is used by industries such as

the automotive, power generation, petrochemical, heavy

machinery, construction and military sectors. .

With advanced manufacturing, engineering and logistics

facilities, ISO/TS and CE certification, Unbrako is equipped to

provide technical support and full-service package. Unbrako's

focus is on building long term relationships with its

customers. Full-service includes engineering and design

support, procurement and purchasing services, localized

warehousing and transport, a variety of packaging options

and choice of delivery frequencies – to provide the right

answer to any customer need. .

Unbrako products are primarily used in performance critical

applications and incorporate unique design and workmanship

features that meet or exceed recognized international

standards, resulting in higher tensile strength, improved

fatigue resistance, improved ease of installation, reduced

total cost of maintenance and extended life cycle. .

Utilizing its international network in 35 countries, Unbrako

provides a complete range of industrial fastening hardware

including bolts, screws, SEM's, nuts, studbolts, self-locking

fasteners, thread forming fasteners, among others. .

State-of-the-art

Heat Treatment

Process

Longest Heat Treatment Capacity

Largest Cold Forgers in the world

BSI

0045 TUVRheinland

2

Prestigious Petrochemical Clientele

Quality And Reliability

Test Certificates

Tests are carried out in our laboratory. Test results, certified by our Quality Assurance department

are available at shipment of products, against invoice, as and when requested by our customers.

In-house Destructive And Non-destructive Testing :

Hardness tests

Uts test

Proof load test

Macrotech tests

Microtech tests

Spectrometer

Tensile Testing Metallurgical Microscope

X-Ray Fluorescence Analyzer

Projects And Development India Limited

Petroleum Development Oman

KNPC

Engineers India Limited

Grains size

Decarburization tests

Ultra soud testing

M.P.I tests

Stress rupture tests

Chemical product check analysis

Heat treatment tests

0 Room temprature tension tests (or at 0 C)

0 Low temperature impact tests (upto -196 c)

X-Ray Fluorescence Analysis

Unbrako®

3

U Snbrako tudbolts

For Gas, Petroleum & Chemical IndustriesISO 9001:2008 and ISO/TS 16949:2002 Quality Assured

Material

Chemical and mechanical requirements should be specified at the time of purchase and

will be in accordance with ASME, ASTM, and ANSI codes and specifications as

applicable at the time of ordering.

How To MeasureStud bolt length is determined by the measurement from the first full thread to the last full thread.

The first and last full thread is determined as the intersection of the major diameter of the thread

with the base of the point. (refer to the diagram).

Length

Diameter

Studbolt for high pressure - temperature

* Highlighted items can be made-to-order.

DIAMETER RANGE : Imperial : 3/8" to 4"

Metric : M10 to M100

A193 Grade B7

A193 Grade B7M

A193 Grade B8

A320 Grade B8M

A193 Grade B16

A320 Grade L7

A320 Grade L7M

A193 Grade B5

A193 Grade B6

A193 Grade B8T

Cr - Mo

Cr - Mo

18 Cr - 8 Ni

18 Cr - 10 Ni - 2 Mo

Cr MoV

Cr - Mo

Cr - Mo

5 Cr

12 Cr

18 Cr - 10 Ni - Ti

4140 / 4142 / 4145

4140 / 4142 / 4145

304

316

EN 40CrMoV4

4140 / 4142 / 4145

4140 / 4142 / 4145

501

410

321

A194 Grade 2H

A194 Grade 2HM

A194 Grade 8

A194 Grade 8M

A194 Grade 4 or 7

A194 Grade 4 or 7

A194 Grade 4M or 7M

A194 Grade 3

A194 Grade 6

A194 Grade 8T

DFL STUDBOLTS (ASTM Spec)

Screw Fastening Material (generic)

MaterialCOMPATIBLE NUTS

(ASTM Spec)

LENGTH : Imperial : upto 10 feet

Metric : upto 3 meters

4

ThreadsThreads are Unified inch coarse thread series (UNC), Class 2A, for all stud bolt sizes 1 inch

and smaller, and Unified inch 8 thread series (UN8), class 2A, for all stud bolts larger than

1 inch, in accordance with ANSI/ASME B1.1. Acceptability of screw threads is determined

based on ANSI/ASME B1.3.

Points are flat and chamfered, or sheared at option of the manufacturer. When points are flat

and chamfered, the diameter of the flat shall not exceed the minor diameter of the thread, and

shall be not less than one or more than two complete threads as measured from the extreme end

parallel to the axis.

Points

How To Order

Important information to be provided while ordering:

Nominal Thread Diameter

Nominal Length in millimeters for studbolts

(Refer to “how to measure”)

The Standard to which the product is required

Finish / Coating Required

Material Grade

Test Certificate Requirements

Unbrako®

5

Studbolt Material SpecificationASTM A-193/ASME SA-193

CHEMICAL REQUIREMENTS

MECHANICAL REQUIREMENTS

AUSTENITIC STEELF E R R I T I C ST E E L

AISI

DIN

W.-NR.

501

12CrM0

19-5

1.7362

B5 B6 B7 B7M B16 B8 B8M B8T B8C

410

X10Cr13

1.4006

4140

42CrMo4

1.7225

24CrM0

V55

1.7711

304

X5CrNi

18-8

1.4301

316

X5CrNiMo

17-12-2

1.4401

321

X6CrNiTi

18-10

1.4541

347

X6CrNiNb

18-10

1.4550

C %

Mn %

Si %

P max %

S max %

Cr %

Ni %

Mo %

V %

Al Max. %

Tl %

Cb+Ta

0,10 min

1 max

1 max.

0,040

0,030

4-6

0,40-0,65

0,08-0,15

1 max

1 max.

0,040

0,030

11,5-13,5

0,37-0,49

0,65-1,10

0,15-0,35

0,035

0,040

0,75-1,20

0,15-0,25

0,36-0,47

0,45-0,70

0,15-0,35

0,035

0,040

0,80-1,15

0,50-0,65

0,25-0,35

0,015

0,08 max.

2 max

1 max.

0,045

0,030

18-20

8-11

0,08 max.

2 max

1 max.

0,045

0,030

16-18

10-14

2-3

0,08 max.

2 max

1 max.

0,045

0,030

17-19

9-12

0,08 max.

2 max

1 max.

0,045

0,030

17-19

9-12

5x(C+N) min.

0,70 max.

10xC min.

1,10 max.

Diameter

T.S. min. Mpa

Y.S min. 0.2% Mpa

Elongation min.%

Red. of Area min.%

Hardness max. HB

Diameter

T.S. min. Mpa

Y.S min. 0.2% Mpa

Elongation min.%

Red. of Area min.%

Hardness max. HB

Diameter

T.S. min. Mpa

Y.S min. 0.2% Mpa

Elongation min.%

Red. of Area min.%

Hardness max. HB

up to 4”

690

550

16

50

up to 4”

760

585

15

50

2 1/2”

and under

860

720

16

50

321

B7

2 1/2”

and under

2 1/2”

and under

690

550

18

50

235

860

725

18

50

321

B7M B16 B8 CL2 - B8T CL2 - B8C CL2

Class 1: all Diameters

515

205

30

50

223

515

205

30

50

223

515

205

30

50

223

515

205

30

50

223

over 2 1/2”

to 4

795

655

16

50

321

over 2 1/2”

to 4

690

550

18

50

235

760

655

17

45

321

over 2 1/2”

to 4

860

690

12

35

321

3/4”

and under

over 3/4”

to 1”

over 1”

to 1 1/4”

over 1 1/4”

to 1 1/2”

795

550

15

35

321

725

450

20

35

321

690

345

28

45

321

B7 B7M B16 B8M CL2

over 4”

to 7”

over 4”

to 7”

over 4”

to 7”

3/4”

and under to 1”

over 3/4”

to 1 1/4”

over 1”

to 1 1/2”

over 1 1/4”

690

515

18

50

321

690

515

18

50

235

690

586

16

45

321

760

655

15

45

321

690

550

20

45

321

655

450

25

45

321

620

345

30

45

321

Alloy steel & stainless steel bolting for high-temperature

6

Studbolt Material SpecificationASTM A-320 & ASTM A-307



ASTM A-320 / ASME SA-320Alloy steel bolting for low-temperature

ASTM A-307 / SA-307Carbon steel bolts and nuts

F E R R I T I C ST E E L AUSTENITIC STEEL CARBON STEEL

L7 L7M L43 B8 B8M B8T B8C GR.A GR.B GR.C

AISI

DIN

W.-Nr.

4140

42CrMo4

1.7225

4340

40NiCr

Mo6

1.6565

304

X5CrNi18-8

1.4301

316

X5CrNiMo

17-12-2

1.4401

321

X6CrNiTi

18-10

1.4541

347

X6CrNiNb

18-10

1.4550

C %

Mn %

Si %

P max %

S max %

Cr %

Ni %

Mo %

Tl %

Cb+Ta

0,38-0,48

0,75-1,00

0,15-0,35

0,035

0,040

0,80-1,10

0,15-0,25

0,38-0,43

0,60-0,85

0,15-0,35

0,035

0,040

0,70-0,90

1,65-2,00

0,20-0,30

0,08 max.

2 max.

1 max.

0,045

0,030

18-20

8-11

0,08 max.

2 max.

1 max.

0,045

0,030

16-18

10-14

2-3

0,08 max.

2 max.

1 max.

0,045

0,030

17-19

9-12

0,08 max.

2 max.

1 max.

0,045

0,030

17-19

9-12

0,29 max.

0,90 max.

0,50 max.

0,04 max.

0,15 0,05

5xC min

10 x C min.

1,10 max.

Diameter

T.S. min. Mpa

Y.S min. 0.2% Mpa

Elongation min.%

Red. of Area min.%

Impact. Test Min. (J)

Temp.

Hardness max. HB

Diameter

T.S. min. Mpa

Y.S min. 0.2% Mpa

Elongation min.%

Red. of Area min.%

Hardness max. HB

Diameter

T.S. min. Mpa

Y.S min. 0.2% Mpa

Elongation min.%

Red. of Area min.%

Hardness max. HB

2 1/2”

and under

2 1/2”

and under

4”

and under

860

725

16

50

690

550

18

50

860

725

16

50

515

205

30

50

515

205

30

50

515

205

30

50

515

205

30

50

415

18

415-690

18

400-500

248

23

Class 1: all Diameters All Diameters

Ind. (20) med. (27)0-101 C 0-73 C

235

0-101 C

223 223 223 223 121-241 121-212

B8 CL2 - B8T CL2 - B8C CL2

3/4”

and under

860

690

12

35

321

over 3/4”

to 1”

795

550

15

35

321

over 1”

to 1 1/4”

over

to 1 1/2”

1 1/4”

725

450

20

35

321

690

345

28

45

321

B8M CL2

3/4”

and under

over 3/4”

to 1”

over 1”

to 1 1/4”

over

to 1 1/2”

1 1/4”

760

655

15

45

321

690

550

20

45

321

655

450

25

45

321

620

345

30

45

321

Unbrako®

7



EQUIVALENCE

Brinell

Hardness

Limits

0.40_>

_>1

0.04

0.05

0.40_>

0.40_>

_>1

0.04

0.05

0.40_>

0.10_>

_>1

0.04

0.03

_>1

0.40-0.50

0.70-0.90

0.035

0.04

0.15-0.35

4-6

0.40-0.65 0.20-0.30

0.15_>

1.00_>

0.04

0.03

_>1 _>1

0.06

0.06

1.25_>

0.15_> 0.37-0.49

0.65-1.10

0.035

0.04

0.15-0.35 0.15-0.35

0.04

11.5-13.5 12-14

_> 0.15

0.75-1.20

0.15-0.25

0.75-1.20

0.15-0.25

0.035

0.65-1.10

0.37-0.49 0.08_>

2_>

0.045

0.03

_>1

0.08_>

2_>

0.045

0.03

_>1

0.08_>

2_>

0.045

0.03

_>1

0.08_>

2_>

0.045

0.03

_>1

8-11 9-12

17-1918-20

10-14

16-18

9-12

17-19

2-3

5xC+Nmin.

0.7 max.

10xC.min.

To 1 1/2”inc.

248-327

Over 1 1/2”212-327

159

235

248

327 327 271 271 327 235 300 300 300 300

126126126126159248228228248

1040

K04002

1040

K04002

501

550100

C45 C4512CrMo

19-5

1.1191 1.1191 1.7362

K14510

410 416 Se

S41000 S41623

X10Cr13

1.4006

4140

G41400

42CrMo4 42CrMo4

1.7225 1.7225

S 30400

4140 304 321

S 32100

X5CrNi18.8

X10CrNiTi 18.10

1.4301 1.4541 1.4401 1.4550

X5CrNiMo

17-12-2

X6CrNiNb

18.10

G 41400 S 31600 S34700

316 347

C %

Mn %

P max. %

S max. %

Si %

Ni %

Cr %

Mo %

Ti %

Se %

Cb + Ta %

AISI

UNS

DIN

W-NR

2H 2HM 3 4 6 6F 7 7M 8 8T 8M 8CGrade

• Please enquire for the material available

Nut Material SpecificationASTM A-194/ASME SA-194

Carbon And Alloy Steel Nuts

8

Influence Of Chemicals In Steel

Steel alloys using difference chemical elements are produced in order to improve the physical

properties of the material and to achieve special properties:

Carbon (C)

Although this is not considered to be an alloying element, it is the most important component in steel. It improves tensile strength, hardness and abrasion resistance. It reduces ductility, rigidity and machining.

Manganese (Mn)

This is an oxidiser and degasifier and reacts with sulphur to improve forgeability. It increases

tensile strength, hardness and durability.

Phosphorus (P)

This increases tensile strength and hardness and improves machinability. It causes fragility in steel.

Sulphur (S)

Improves machining qualities in the presence of manganese. It reduces weldability, impact,

roughness, and ductility.

Silicon (Si)

This is a deoxidiser and degasifier. It increases tensile strength, elasticity, hardness and forgeability.

Chromium (Cr)

Increase breaking strength, hardness, durability, roughness, and resistance to high temperatures.

Nickel (Ni)

This raises strength and hardness, while maintaining ductility and rigidity. It increases resistance

to cracking and high temperatures.

Molybdenum (Mo)

This increases strength, hardness, durability, and rigidity, together with resistance to creaking

and to high temperatures.

Titanium (Ti)

This is used as a stabilising element in stainless steels. It has a great affinity for carbon.

Unbrako®

9

Properties Of Steel

B6

B7

B7M

B16

B8 (A- 193)

B8 (A- 320)

B8M (A-193)

B8M (A-320)

B8C (A-193)

B8C (A-320)

B8T (A-193)

B8T (A-320)

B5

PROPERTYQUALITY

Good resistance in corrosive environments (crude oil, petroleum, organic acids, organic

solvents, ammonia), but not in highly corrosive environments. Good resistance to corrosion 0up to a temperature of 650 C, good weldability.

0 0Good strength and hardness, above all for uses in conditions of high temp. (-10 C to +427 C)

Applications: Petrochemicals, valves, pumps.

Similar to B7 but with lower mechanical properties.

Applications: Petrochemical Industry.

0 0Prescribed for good strength and hardness in conditions of high (-10 C 558 C)


temp. to +

0 0Used in temperatures of between -196 C and +538 C. Good resistance to intercrystalline

corrosion, and excellent weldability.

Applications: Petrochemicals, chemicals, pharmaceuticals, foodstuffs and ironwork.

0 0Good resistance to corrosion. Suitable for uses at low temperatures (-254 C +500 C)

Applications: Chemical, pharmaceutical, and foodstuffs Industries.

to

Excellent resistance to intercrystalline corrosion and to corrosion caused by Cl ions.0 0Temperature range (-196 C + 538 C). to

0 0Good resistance to corrosion. Indicated for temperatures between -196 C and +50 C.

Applications: Chemical and petrochemical industries.

0 0High resistance to intergranular corrosion and oxidation. Used for temperatures of (-196 C +538 C).

Applications: Petrochemical industry, changes of temperature and in the construction of structures for

chemical plants.

to

0 0Good resistance to corrosion. Indicated for temperatures of (-254 C to +50 C).

Applications: Chemical and petrochemical industries.

0 0Indicated for the range of temperatures between (-196 C to +538 C). High resistance to

intergranular corrosion Due to the presence of Titanium. Good weldability without the requirement

for additional heat treatment.

Applications: Petrochemical, chemical, foodstuffs industries, and energy generator plants.

0 0Used for temperatures of (-101 C /+500 C). Applications: petrochemical Industry.

For use in high temperature conditions.

Applications: Petrochemical industry, valves and flanges.

10

Properties Of Steel

Excellent mechanical properties for use at high temperatures.

Applications : Pressure equipment and flangers

0 0Good strength and hardness, excellent for use at low temp. (-101 C to +50 C).


Similar to L7 but with lower mechanical properties.


High strength, good weldability, perfect resistance to corrosion under a wide range of temp and

conditions (sea water, mineral and organic acidity).

Applications: Valves, pumps, marine installations, petrochemical plants, changes of temperature,

and for uses in contact with sulphuric and hydrochloric acids.

Greater mechanical strength and resistance to abrasion than Monel 400.

Applications: Valve, pumps, petrochemical plants, and fasteners.

Excellent resistance to both oxidising and reducing environments, as well as in corrosive

environments at high temp.

Applications: Equipment for the chemical, textile, foodstuffs industries kilns.and

0Great mechanical strength from cryogenic temp up to very high temp (1100 C). Excellent resistance

to fatigue and oxidation.

Applications: Chemical industry, marine equipment, pipes and valves.

0Resistance to corrosion and carbonisation at high temp (up to 1100 C). Resistant to attack by

sulphides, corrosion and pickling.

Applications: Changes of temperature, heat equipment, generators.

Excellent resistance to breaking due to corrosion, resistant to oxidising and reducing environments.

Applications: Deoxidising tanks, chemical industry, pollution control systems.

Good resistance to breaking due to corrosion in the presence of chlorine compounds, resistance to

intercrystalline corrosion.

Application: Employed in environment with sever chemical processes, in the paper industry, and in

pollution control.

Very high resistance to breaking due to corrosion.

Application: Chemical and oil industries, pipes, flanges, valves for use at high temp.

Perfect resistance to interstitial corrosion and corrosive environments.

Application: Marine installations and petrochemical industries,

GR.660

L7

L7M

Monel 400

Monel 500

Inconel 600

Inconel 625

Incoloy 800H

Incoloy 825

Hastelloy C276

Duplex 2205

Superduplex

32760

QUALITY PROPERTY

Unbrako®

11

Dimensions Of Metric Nuts

Metric Nuts In 2H Material Are Manufactured To DIN 934, H=D Dimensions.

M 8

M 10

M 12

M 14

M 16

M 18

M 20

M 22

M24

M 27

M 30

M 33

M 36

M 39

M 42

M 45

M 48

M 52

M 56

M 60

M 64

M 68

M 72

M 76

M 80

M 85

M 90

M 95

M 100

13

17

19

22

24

27

30

32

36

41

46

50

55

60

65

70

75

80

85

90

95

100

105

110

115

120

130

135

145

8

10

12

14

16

18

20

22

24

27

30

33

36

39

42

45

48

52

56

60

64

68

72

76

80

85

90

95

100

1,25

1,50

1,75

2,00

2,00

2,50

2,50

2,50

3,00

3,00

3,50

3,50

4,00

4,00

4,50

4,50

5,00

5,00

5,50

5,50

6,00

6,00

6,00

6,00

6,00

6,00

6,00

6,00

6,00

0,6

1,4

2

3,1

4

5,8

7,9

9,4

13,7

20

28,4

36,1

48,3

62,3

79,5

98,8

122

147

177

208

245

284

327

374

425

483

606

680

835

Across Flat

(Min/Max)

Size

Diameter

Weight ( Per 100 Nuts

kg)ISO Thread (Pitch)

Nut Height

METRIC SERIES

12

Dimensions Of Imperial Nuts

For Imperial Studbolts Heavy Hexagon Nuts Are Used,

Complying To AS 2528 & ANSI B18 2.2 For Heavy Hex Nuts.

Threads Per Inch (Pitch)

Weight ( Per 100 Nuts

kg)

In mm

Across Flat Nut Height

Min/Max

3/8”

7/16”

1/ 2”

9/16”

5/8”

3/4”

7/8”

1”

1 1/8”

1 1/4”

1 3/8”

1 1/2”

1 5/8”

1 3/4”

1 7/8”

2”

2 1/4”

2 1/2”

2 3/4”

3”

3 1/4”

3 1/2”

3 3/4”

4”

0.375

0.437

0.500

0.562

0.625

0.750

0.875

1.000

1.125

1.250

1.375

1.500

1.625

1.750

1.875

2.000

2.250

2.500

2.750

3.000

3.250

3.500

3.750

4.000

17.4

19

22.2

23.8

27

31.7

36.5

41.2

46

50.8

55.5

60.3

65

69.8

74.6

79.3

88.9

98.4

108

118

127

136.5

146

155.6

3/8”

7/16”

1/ 2”

9/16”

5/8”

3/4”

7/8”

1”

1 1/8”

1 1/4”

1 3/8”

1 1/2”

1 5/8”

1 3/4”

1 7/8”

2”

2 1/4”

2 1/2”

2 3/4”

3”

3 1/4”

3 1/2”

3 3/4”

4”

1.4

1.9

3.0

3.7

5.4

8.8

13.5

19.3

26.9

35.7

46.3

59.5

73.6

92.7

109.5

135.8

190.3

256.0

335.0

432.0

543

694

824

991

16

14

13

12

11

10

9

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

Size

Diameter

UNC/UN8 INCH SERIES

Unbrako®

13

ASTM F436-M Washer

Hardness 38-45 HRC

Hardness for hot dip Galvanised finish 26-45 HRC

Washer

Size, mm

Inside

Diameter, mm

12

14

16

20

22

24

27

30

36

42

48

56

64

72

80

90

100

14.4

16.4

18.4

22.5

24.5

26.5

30.5

33.6

39.6

45.6

52.7

62.7

70.7

78.7

86.9

96.9

107.9

14.0

16.0

18.0

22.0

24.0

26.0

30.0

33.0

39.0

45.0

52.0

62.0

70.0

78.0

86.0

96.0

107.0

27.0

30.0

34.0

42.0

44.0

50.0

56.0

60.0

72.0

84.0

95.0

107.0

118.0

130.0

142.0

159.0

176.0

25.7

28.7

32.4

40.4

42.4

48.4

54.1

58.1

70.1

81.8

92.8

104.8

115.8

127.5

139.5

156.5

173.5

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

7.2

7.2

8.7

8.7

8.7

8.7

8.7

8.7

3.1

3.1

3.1

3.1

3.4

3.4

3.4

3.4

3.4

4.6

4.6

6.1

6.1

6.1

6.1

6.1

6.1

min max min min max max

Outside

Diameter, mmThickness, mm

Mechanical Properties ASTM-F-436M

ElementType 1 Type 3

0.040

0.050

0.15-0.35

0.45-0.65

0.25-0.45

0.25-0.45

0.040

0.050

.....

.....

.....

.....

Phosphorus, max

Sulfur, max

Silicon

Chromium

Nickel

Copper

Composition.%

Chemical Requirements ASTM F-436M

14

ASTM F436 Washer, Inch

Hardness 38-45 HRC

Hardness for hot dip Galvanised finish 26-45 HRC

Mechanical Properties ASTM-F-436

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1

1 1/8

1 1/4

1 3/8

1 1/2

1 3/4

2

2 1/4

2 1/2

2 3/4

3

3 1/4

3 1/2

3 3/4

4

0.625

0.688

0.813

0.922

1.063

1.188

1.313

1.468

1.750

2.000

2.250

2.500

2.750

3.000

3.375

3.750

4.000

4.500

5.000

5.500

6.000

6.500

7.000

7.500

0.281

0.344

0.406

0.469

0.531

0.625

0.688

0.813

0.938

1.063

1.188

1.375

1.500

1.625

1.875

2.125

2.375

2.625

2.875

3.125

3.375

3.625

3.875

4.125

0.051

0.051

0.051

0.051

0.097

0.110

0.122

0.122

0.136

0.136

0.136

0.136

0.136

0.136

B0.178

B0.178

C0.24

C0.24

C0.24

C0.24

C0.24

C0.24

C0.24

C0.24

Size

Outside

Diameter(OD)

Inch

Inside

Diameter(ID),

Inch

Thickness(T), Inch

Min Max

Chemical Requirements ASTM F-436

0.080

0.080

0.080

0.080

0.177

0.177

0.177

0.177

0.177

0.177

0.177

0.177

0.177

0.177

B0.28

B0.28

C0.34

C0.34

C0.34

C0.34

C0.34

C0.34

C0.34

C0.34

ElementType 1 Type 3

0.040

0.050

0.15-0.35

0.45-0.65

0.25-0.45

0.25-0.45

0.040

0.050

.....

.....

.....

.....

Phosphorus, max

Sulfur, max

Silicon

Chromium

Nickel

Copper

Composition.%

B 3/16 Inch NominalC 1/4 Inch Nominal

Unbrako®

15

Preparation For Assembly

The gasket seating surfaces should be inspected for cracks, scratches, tool marks or pitting. If necessary

rework the flanges.

Clean and inspect each studbolt and nut. Nuts should run freely on the studbolt.

Make sure that compatible materials of studbolts and nuts are used.

1.

2.

3.

Recommended Fasteners For Different Working Conditions

SERVICE CONDITION

HIGH PRESSURE

HIGH TEMPERATURE

HIGH

HIGH CORROSIVE

TEMPERATURE

HIGH PRESSURE

LOW TEMPERATURE

LOW TEMPERATURE

STUDBOLTS

ASTM A193 Gr. B5

ASTM A193 Gr. B6

ASTM A193 Gr. B7

ASTM A193 Gr. B7.M

ASTM A193 Gr. B16

ASTM A 453 Gr. 660

ASTM A 453 Gr. 651

ASTM A193 Gr. B8

ASTM A193 Gr. B8L

ASTM A193 Gr. B8M

ASTM A193 Gr. B8ML

ASTM A320 Gr. L7

ASTM A320 Gr. L43

ASTM A320 Gr. B8

ASTM A320 Gr. B8C

ASTM A320 Gr. B8M

ASTM A320 Gr. B8T

ASTM A194 Gr. 3

ASTM A194 Gr. 6

ASTM A194 Gr. 2H

ASTM A194 Gr. 2HM

ASTM A194 Gr. 4or7

ASTM A194 Gr. 8C

ASTM A193 Gr. 8C

ASTM A194 Gr. 8

ASTM A194 Gr. 8L

ASTM A194 Gr. 8M

ASTM A194 Gr. 8ML

ASTM A194 Gr. 4 or 7

ASTM A194 Gr. 7

ASTM A194 Gr. 8

ASTM A194 Gr. 8C

ASTM A194 Gr. 8M

ASTM A194 Gr. 8T

NUTS

4. Lubricate all studbolts and nuts with suitable parting lubricants or anti-seize compounds, including all

thread contact areas and nut faces in the process. Different lubricants produce changes to the coefficient

of friction between the bolt and nut threads. Approximate values are shown in the following table.

However, note that surface finish of flanges may also affect these values.

.

16

Lubricant

No lubricant. clean stainless steel studbolts & nuts

No lubricant. clean steel studbolts & nuts

Zinc plated, dry

Machine oil

Molybdenum disulphide based grease

Copper based anti-seize

Solid PTFE film

Coefficient of Friction

0.30

0.25

0.29

0.20

0.15

0.15

0.04 to 0.10

Inspect the gasket for any damage or imperfections and ensure the gasket is suitable for the flange

operating conditions of temperature, pressure and material being sealed.

5.

For a given torque, clamping load applied by the studbolts and nuts increases as the coefficient of friction

decreases. And a lower coefficient of friction means a better chance of producing reliable joints.

During Assembly, gaskets are usually placed between the flanges being bolted. First, roughly align

the gasket in the joint by inserting a few bolts at the top of the flange. Then, lightly tighten all the

other bolts. During the Tightening process the correct sequence (as illustrated below) should be used.

Tightening should be continued in a clockwise manner until the desired torque is achieved. If using a

torque wrench make sure it is properly calibrated. .

1

2

4 3

1

2

4 3

10

9

6

5

7

8

11

12

1 9241716

58

12 21

4 3

20 13

22 11

14 19

6 718 15

10 232

The sketch above shows the sequence for 4, 12 and 24 bolt flanges

Assembly And Tightening

Preparation For AssemblyUnbrako®

17

Tightening Torques

In the following pages tightening torque figures are calculated for the studbolt range. We have assumed coefficient of

friction of 0.20, and torque figures have been generated for clamping loads of 30%, 44% and 60% of yield loads.

Adjustments where necessary should be made. Tightening torque is calculated as T=KDP, whereby T = Tightening

Torque, K = Coefficient of Friction, D = Diameter of Stud Bolt and P = Induced Load.

.

Common industry practice for industrial bolting is to specify tightening torques to develop clamping loads of

60% to 65% of yield load. However, for studbolts, field experience suggests that clamping loads of more than

44% of yield load may cause deformation of flanges and difficulty in sealing joints. This fact should be accounted

for in estimating tightening torque values. Some authorities adopt the flange deformation stress as the controlling

factor. This allows the selection of single bolt stress value for a range of pipe classes even if different bolt types are

in use. .

ASTM A-193 Grade B-7 Stud Bolts Metric Dimensions

NOTE:- Torque values calculated are for initial guidance only and should be checked as per actual usage.

Dia

mm

Tensile Strength

ksi [MPa] min

Yield Strength

ksi [MPA] min

_< M64 125 [860] 105 [720]

25

44

69

108

149

212

288

366

536

727

989

1271

1644

37

64

102

150

220

312

424

540

790

1071

1458

1872

2423

50

87

139

217

299

423

576

732

1071

1454

1979

2541

3289

M10

M12

M14

M16

M18

M20

M22

M24

M27

M30

M33

M36

M39

1.50

1.75

2.00

2.00

2.50

2.50

2.50

3.00

3.00

3.50

3.50

4.00

4.00

41.8

60.7

82.8

113.0

138.2

176.4

218.2

254.2

330.5

403.9

499.7

588.2

702.7

9397

13646

18614

25403

31069

39656

49053

57146

74300

90800

112337

132233

157973

18

32

51

80

110

156

211

270

395

536

729

936

1212

27

47

75

117

161

229

311

396

579

786

1069

1373

1777

37

64

102

159

219

310

422

537

785

1066

1451

1863

2412

Diamm

Thread

Pitch

Yield

Load

KN

Yield

Load

IbfNmft.lbsNmft.lbsft. Ibs

For 44% of Yield Load For 60% of Yield Load

Tightening Torques

For 30% of Yield Load

Nm

Unbrako®

19

Tightening Torques

ASTM A193 GRADE B7,B-16 & ASTM A-320 L-7 Studbolts Imerial Dimensions


Yield Strength

ksi [MPA] min

_< 2 ½

> 2 ½ to 4

125 [860]

115 [795]

105 [720]

95 [655]

Dia inch

Tensile ksi [MPa] min

Strength

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1

11/8

1 1/4

1 3/8

1 ½

1 5/8

1 3/4

1 7/8

2

2 1/4

2 ½

2 3/4

3

3 1/4

3 1/2

Dia inch

16 UNC

14 UNC

13 UNC

12 UNC

11 UNC

10 UNC

9 UNC

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

ThreadYield Load

Ibf

Yield Load

N

ft.lbs Nm ft.lbs Nm ft.lbs Nm

41

66

101

146

201

357

575

862

1265

1780

2414

3186

4118

5182

6433

7887

11276

15802

19234

25155

32191

40393

31

49

75

107

148

263

424

636

933

1313

1780

2350

3037

3822

4745

5817

8411

11655

14186

18554

23743

29792

30

48

74

107

147

262

422

633

928

1305

1770

2336

3020

3801

4717

5784

8269

11588

14105

18447

23607

29621

22

36

55

79

109

193

311

467

684

963

1305

1723

2227

2803

3479

4266

6099

8547

10403

13607

17411

21847

21

33

51

73

101

178

288

431

633

890

1207

1593

2060

2591

3216

3944

5638

7902

9617

12578

16096

20196

15

24

37

54

74

132

212

318

467

656

890

1175

1519

1911

2372

2909

4205

5828

7093

9277

11871

14896

36210

49510

66325

85005

105550

156000

215780

283040

368980

467065

575890

696860

831370

971490

1125620

1293765

1662745

2073760

2294615

2751005

3249650

3786325

8140

11130

14910

19110

23730

35070

48510

63630

82950

105000

129465

156660

186900

218400

253050

290850

373800

466200

515850

618450

730550

851200

For 30% of Yield Load For 44% of Yield Load For 60% of Yield Load

Tightening Torques

20

Tightening Torques

ASTM A-193 Grade B-7M Stud Bolts Imperial Dimensions

_< 2 1/2 100 [690] 80 [550]

DiaTensile Strength

ksi [MPa]min

Yield Strength

ksi [MPA] min

38

55

77

136

219

329

482

678

919

1214

1569

1974

2451

3005

57

82

113

200

323

485

711

1000

1356

1790

2314

2912

3615

4432

77

111

153

272

438

657

964

1356

1839

2427

3137

3948

4901

6009

1/2

9/16

5/8

3/4

7/8

1

1 1/8

1 1/4

1 3/8

1 ½

1 5/8

1 3/4

1 7/8

2

UNC

UNC

UNC

UNC

UNC

UNC

UN8

UN8

UN8

UN8

UN8

UN8

UN8

UN8

11360

14560

18080

26720

36960

48480

63200

80000

98640

119360

142400

166400

192800

221600

50532

64766

80424

118857

164406

215650

281127

355858

438773

530940

633427

740184

857617

985726

28

41

57

100

162

242

356

500

678

895

1157

1456

1808

2216

42

60

83

147

237

356

521

733

995

1313

1697

2135

2651

3250

56

81

112

199

322

482

707

994

1349

1780

2301

2895

3594

4407

Dia Thread

Yield

Load

lbf

Yield

Load

NNmft.lbsNmft.lbsft. Ibs

For 44% of Yield Load For 60% of Yield Load

Tightening Torques

For 30% of Yield Load

Nm


Unbrako®

21

Proof Load (Metric)

Proof Load Using Threaded Mandrel

20.8

37.9

60.0

87.3

119.0

162.5

253.6

313.6

365.4

475.1

580.6

845.6

M6

M8

M10

M12

M14

M16

M20

M22

M24

M27

M30

M36

1.0

1.25

1.50

1.75

2.0

2.0

2.5

2.5

3.0

3.0

3.5

4.0

20.1

36.6

58.0

84.3

115.0

157.0

245.0

303.0

353.0

459.0

561.0

817.0

16.6

30.2

47.9

69.5

94.9

129.5

202.1

249.9

291.2

378.7

462.8

674.0

18.7

34.0

53.9

78.4

107.0

146.0

227.8

281.8

328.3

426.9

521.7

759.8

10.4

18.8

29.9

43.4

59.2

80.9

126.2

156.0

181.8

236.4

288.9

420.8

Nominal

Size

Inch (mm)

Thread

Pitch

Stress

Area2mm

AProof Looad, KN

EHex

All Types of Grade 8,

& Grades 9C and 9CA

DHex

Grades 2H, 3, 4,

7, 16

BHex

Grade 1

CHex

Grades 2, 2HM, 6,

6F, 7M

A See limit for proof load test in 18.2.2.1. The proof load for jam nut shall be 46% of the tabulated load.

B Based on proof stress of 825 Mpa.

C Based on proof stress of 935 Mpa.

D Based on proof stress of 1205 Mpa.

E Based on proof stress of 515 Mpa.

NOTE: Proof loads are not design loads.

22

Proof Load (Imperial)

Proof Load Using Threaded Mandrel

4 130

6 810

10 080

13 820

18 450

23 660

29 380

43 420

60 060

78 780

102 700

130 000

160 200

194 000

[18.4]

[30.3]

[44.8]

[61.5]

[82.1]

[105]

[131]

[193]

[267]

[350]

[457]

[578]

[713]

[863]

5 570

9 170

13 560

18 600

24 830

31 850

39 550

58 450

80 850

106 000

138 200

175 000

215 800

261 100

[24.8]

[40.8]

[60.3]

[82.7]

[110]

[142]

[176]

[260]

[360]

[472]

[615]

[778]

[960]

[1161]

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1

1/81

1/41

3/81

1/21

20

18

16

14

13

12

11

10

9

8

8

8

8

8

0.0316

0.0524

0.0774

0.1063

0.1419

0.182

0.226

0.334

0.462

0.606

0.79

1.000

1.233

1.492

[20.4]

[33.8]

[49.9]

[68.6]

[91.5]

[117]

[146]

[215]

[298]

[391]

[510]

[645]

[795]

[962]

[6.4]

[7.9]

[9.5]

[11.1]

[12.7]

[14.2]

[15.9]

[19]

[22.2]

[25.4]

[28.6]

[31.8]

[34.9]

[38.1]

4 770

7 860

11 620

15 940

21 280

27 300

33 900

50 100

69 300

90 900

118 500

150 000

185 000

223 800

[21.2]

[35.0]

[51.7]

[70.9]

[94.6]

[121]

[151]

[223]

[308]

[404]

[527]

[667]

[823]

[996]

2 540

4 190

6 200

8 500

11 350

14 560

18 080

26 720

36 960

48 480

63 200

80 000

98 640

119 360

[11.3]

[18.6]

[27.6]

[37.8]

[50.5]

[64.8]

[80.4]

[119]

[164]

[216]

[281]

[356]

[439]

[531]

Nominal Size

Inch [mm]

Treads per inch

[25.4 mm]

Stress Area,2 2inch [mm ]

BHeavy HexGrade 1

2 2inch [mm ]

EHeavy Hex

All Types of grade 82 2inch [mm ]

C Heavy Hex

Gr. 2, 2HM, 6, 6F, 7M2 2inch [mm ]

D Heavy Hex

Gr. 2H, 3, 4, 7, 162 2inch [mm ]

AProof Looad, KN

A See limit for proof load test in 18.2.2.1. The proof load for jam nut shall be 46% of the tabulated load.

B Based on proof stress of 130,000 psi

C Based on proof stress of 150,000 psi

D Based on proof stress of 175,000 psi

E Based on proof stress of 80,000 psi

NOTE: Proof loads are not design loads.

Unbrako®

23


(Pn20) (Class 150)

DN 750, 900 TO BS 3293 DIN 15 TO 600 CONFORM TO ANSI B16.5

NOTE

1.

2.

3.

4.

Imperial lengths are an approximate conversion.

Face height of 2mm is included in stud length for RF type flange.

Stud bolt length does not include points (refer to how to measure).

Stud bolt lengths are rounded to nearest 5mm.

15

20

25

32

40

50

65

80

90

100

125

150

200

250

300

350

400

450

500

600

750

900

1/ 2”

3/4”

1”

1 1/4”

1 1/2”

2”

2 1/2”

3”

3 1/2”

4”

5”

6”

8”

10”

12”

14”

16”

18”

20”

24”

30”

36”

4

4

4

4

4

4

4

4

8

8

8

8

8

12

12

12

16

16

20

20

28

32

1/ 2”

1/ 2”

1/ 2”

1/ 2”

1/ 2”

5/ 8”

5/ 8”

5/ 8”

5/ 8”

5/ 8”

3/ 4”

3/ 4”

3/ 4”

7/ 8”

7/ 8”

1”

1”

1 1/8”

1 1/8”

1 1/4”

1 1/4”

1 1/2”

65

65

70

70

75

85

90

95

95

95

100

100

110

120

120

135

140

150

160

180

190

215

2 1/ 2”

2 1/ 2”

2 3/ 4”

2 3/ 4”

3”

3 1/ 4”

3 1/2”

3 3/4”

3 3/4”

3 3/4”

4”

4”

4 1/4”

4 3/4”

4 3/4”

5 1/4”

5 1/2”

6”

6 1/4”

7”

7 1/2”

8 1/2”

QuantitySize

inches mm inches

Length (For Flange RF Type)

STUDBOLTS REQUIRED

NPSDN

Flange Nominal Size

24

DN 750, 900 TO BS 3293 DIN15 TO 600 CONFORM TO ANSI B16.5

(Pn50) (Class 300)

NOTE:-

1.

2.

3.

4.






QuantitySize

inches mm inches


STUDBOLTS REQUIRED

NPSDN

Flange Nominal Size

1/ 2”

5/8”

5/8”

5/8”

3/4”

5/ 8”

3/4”

3/4”

3/4”

3/4”

3/ 4”

3/ 4”

7/8”

1”

1 1/8”

1 1/8”

1 1/4”

1 1/4”

1 1/4”

1 1/2”

1 3/4”

2”

2 1/ 2”

3”

3 1/ 4”

3 1/4”

3 1/2”

3 1/2”

4”

4 1/4”

4 1/4”

4 1/4”

4 3/4”

5

5 1/2”

6 1/4”

6 6/4”

7”

7 1/2”

7 3/4”

8 1/4”

9

11 1/2”

12 3/4”

65

75

80

80

90

90

100

110

110

110

120

125

140

160

170

180

190

195

210

230

290

325

4

4

4

4

4

4

4

4

8

8

8

8

8

12

12

12

16

16

20

20

28

32

1/ 2”

3/4”

1”

1 1/4”

1 1/2”

2”

2 1/2”

3”

3 1/2”

4”

5”

6”

8”

10”

12”

14”

16”

18”

20”

24”

30”

36”

15

20

25

32

40

50

65

80

90

100

125

150

200

250

300

350

400

450

500

600

750

900

Unbrako®

25


NOTE

1.

2.

3.

4.






(Pn100) (Class 600)

1/2”

5/8”

5/8”

5/8”

3/4”

5/8”

3/4”

3/4”

7/8”

7/8”

1”

1”

1 1/8”

1 1/4”

1 1/4”

1 3/8”

1 1/2”

1 5/8”

1 5/8”

1 7/8”

2”

2 1/2”

3 1/4”

3 1/2”

3 1/2”

4”

4 1/4”

4 1/4”

4 3/4”

5

5 1/2”

5 3/4”

6 1/2”

6 3/4”

7 3/4”

8 ½”

8 3/4”

9 1/4”

10”

10 3/4”

11 1/2”

13”

14”

15 3/4”

80

90

90

100

110

110

120

125

140

145

165

170

195

215

220

235

355

275

290

330

355

400

4

4

4

4

8

8

8

8

8

8

12

12

16

20

20

20

20

24

24

28

28

41/ 2”

3/4”

1”

1 1/4”

1 1/2”

2”

2 1/2”

3”

3 1/2”

4”

5”

6”

8”

10”

12”

14”

16”

18”

20”

24”

30”

36”

15

20

25

32

40

50

65

80

90

100

125

150

200

250

300

350

400

450

500

600

750

900

QuantitySize

inches mm inches


STUDBOLTS REQUIRED

NPSDN

Flange Nominal Size

26


(Pn150) (Class 900)

NOTE:-

1. Imperial lengths are an approximate conversion.

2. Face height of 2mm is included in stud length for RF type flange.

3. Stud bolt length does not include points (refer to how to measure).

4. Stud bolt lengths are rounded to nearest 5mm.

1.

2.

3.

4.






3/4”

3/4”

7/8”

7/8”

1”

7/8”

1”

7/8”

1 1/8”

1 1/4”

1 1/8”

1 3/8”

1 3/8”

1 3/8”

1 1/2”

1 5/8”

1 7/8”

2”

2 1/2”

4 1/4”

4 1/2”

5”

5”

5 1/2”

5 3/4”

6 1/4”

5 3/4”

6 3/4”

7 1/2”

7 3/4”

8 3/4”

9 1/4”

10”

10 3/4”

11 1/2”

12 3/4”

13 1/2”

17 1/4”

110

115

125

125

140

145

160

145

170

190

195

220

235

255

275

290

325

345

440

4

4

4

4

4

8

8

8

8

8

12

12

16

20

20

20

20

20

20

1/ 2”

3/4”

1”

1 1/4”

1 1/2”

2”

2 1/2”

3”

4”

5”

6”

8”

10”

12”

14”

16”

18”

20”

24”

15

20

25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500

600

QuantitySize

inches mm inches


STUDBOLTS REQUIRED

NPSDN

Flange Nominal Size

Unbrako®

27


NOTE

1.

2.

3.

4.





CONFORM TO ANSI B16.5 DIN 15 TO 600

(PN250) (Class 1500)

3/4”

3/4”

7/8”

7/8”

1”

7/8”

1”

7/8”

1 1/8”

1 1/4”

1 1/8”

1 3/8”

1 3/8”

1 3/8”

1 ½”

1 5/8”

1 7/8”

2”

2 1/2”

4 1/4”

4 1/2”

5”

5”

5 1/2”

5 3/4”

6 1/4”

7”

7 3/4”

9 3/4”

10 1/4”

11 1/2”

13 1/4”

14 3/4”

16”

17 1/2”

19 ½”

21 1/2”

24 1/4”

110

115

125

125

140

145

160

180

195

250

260

290

335

375

405

445

495

545

615

4

4

4

4

4

8

8

8

8

8

12

12

12

16

16

16

16

16

16

1/ 2”

3/4”

1”

1 1/4”

1 1/2”

2”

2 1/2”

3”

4”

5”

6”

8”

10”

12”

14”

16”

18”

20”

24”

15

20

25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500

600

QuantitySize

inches mm inches


STUDBOLTS REQUIRED

NPSDN

Flange Nominal Size

28

NOTE:-

1.

2.

3.

4.






DIN 15 TO 300 COMPLIES TO ANSI B16.5

(PN420) (Class 2500)

3/4”

3/4”

7/8”

1”

1 1/8”

1”

1 1/8”

1 1/4”

1 1/2”

1 3/4”

2”

2”

2 1/2”

2 3/4”

5”

5”

5 1/2”

6

6 3/4”

7

7 3/4

8 3/4

10”

11 3/4”

13 3/4”

15”

19”

21 1/2”

125

125

140

150

170

180

195

220

255

300

350

380

485

545

4

4

4

4

4

8

8

8

8

8

8

12

12

12

1/2"

3/4”

1”

1 1/4”

1 1/2”

2”

2 1/2"

3”

4”

5”

6”

8”

10”

12”

15

20

25

32

40

50

65

80

100

125

150

200

250

300

QuantitySize

inches mm inches


STUDBOLTS REQUIRED

NPSDN

Flange Nominal Size

Unbrako®

29

Product Weight

Totally Threaded With 2 Heavy Hexagonal Nuts

2”

2.1/4”

2.1/2”

2.3/4”

3”

3.1/4”

3.1/2”

3.3/4”

4”

4.1/4”

4.1/2”

4.3/4”

5”

5.1/4”

5.1/2”

5.3/4”

6”

6.1/4”

6.1/2”

6.3/4”

7”

7.1/4”

7.1/2”

7.3/4”

8”

8.1/4”

8.1/2”

8.3/4”

9”

9.1/4”

9.1/2”

9.3/4”

10”

10.1/4”

10.1/2”

10.3/4”

50

60

65

70

75

80

90

95

100

110

115

120

125

130

140

145

150

160

165

170

180

185

190

195

200

210

215

220

230

235

240

250

255

260

265

275

0.054

0.056

0.061

0.063

0.065

0.069

0.071

0.074

0.076

0.080

0.082

0.084

0.086

0.091

0.093

0.095

0.097

0.102

0.104

0.106

0.110

0.112

0.114

0.117

0.121

0.123

0.125

0.127

0.132

0.134

0.136

0.140

0.142

0.145

0.147

0.151

0.073

0.076

0.082

0.085

0.087

0.093

0.096

0.099

0.102

0.108

0.111

0.114

0.117

0.123

0.126

0.128

0.131

0.137

0.140

0.143

0.149

0.152

0.155

0.158

0.164

0.167

0.169

0.172

0.178

0.181

0.184

0.19

0.193

0.196

0.199

0.205

0.108

0.113

0.121

0.125

0.129

0.137

0.141

0.145

0.149

0.157

0.161

0.165

0.169

0.177

0.181

0.185

0.189

0.197

0.201

0.205

0.213

0.217

0.221

0.225

0.233

0.237

0.241

0.245

0.253

0.257

0.261

0.269

0.274

0.278

0.282

0.290

0.135

0.140

0.150

0.155

0.160

0.170

0.174

0.179

0.184

0.194

0.199

0.204

0.209

0.219

0.224

0.229

0.234

0.244

0.249

0.254

0.264

0.269

0.224

0.279

0.289

0.294

0.299

0.304

0.314

0.319

0.324

0.334

0.339

0.344

0.349

0.359

0.172

0.178

0.191

0.197

0.203

0.216

0.122

0.229

0.235

0.248

0.254

0.261

0.267

0.28

0.286

0.292

0.299

0.311

0.318

0.324

0.337

0.343

0.349

0.356

0.369

0.375

0.381

0.388

0.400

0.407

0.413

0.426

0.432

0.438

0.445

0.457

0.279

0.289

0.307

0.317

0.326

0.345

0.354

0.363

0.373

0.391

0.401

0.410

0.420

0.438

0.448

0.457

0.466

0.485

0.494

0.504

0.522

0.532

0.541

0.550

0.569

0.578

0.588

0.597

0.616

0.625

0.635

0.653

0.663

0.672

0.681

0.700

0.400

0.413

0.438

0.451

0.464

0.489

0.502

0.515

0.528

0.553

0.566

0.579

0.592

0.617

0.630

0.643

0.656

0.681

0.694

0.707

0.733

0.745

0.758

0.771

0.797

0.809

0.822

0.835

0.861

0.873

0.886

0.912

0.925

0.937

0.950

0.976

0.554

0.571

0.604

0.621

0.638

0.671

0.688

0.705

0.722

0.755

0.772

0.789

0.806

0.839

0.856

0.870

0.890

0.923

0.940

0.957

0.991

1.007

1.024

1.041

1.075

1.091

1.108

1.125

1.159

1.175

1.192

1.226

1.243

1.259

1.276

1.310

0.747

0.768

0.812

0.833

0.855

0.898

0.920

0.940

0.963

1.006

1.028

1.050

1.071

1.115

1.136

1.158

1.180

1.223

1.245

1.266

1.309

1.331

1.353

1.374

1.418

1.439

1.461

1.483

1.526

1.548

1.569

1.613

1.634

1.656

1.678

1.221

0.960

0.988

1.042

1.069

1.096

1.151

1.178

1.205

1.232

1.286

1.313

1.341

1.368

1.422

1.449

1.476

1.503

1.558

1.585

1.612

1.666

1.694

1.721

1.748

1.802

1.829

1.856

1.884

1.938

1.965

1.992

2.045

2.074

2.101

2.128

2.182

1.229

1.263

1.329

1.362

1.396

1.462

1.495

1.529

1.562

1.628

1.662

1.695

1.728

1.795

1.828

1.861

1.894

1.961

1.994

2.027

2.094

2.127

2.160

2.194

2.260

2.293

2.327

2.360

2.426

2.460

2.493

2.559

2.593

2.626

2.659

2.726

1.543

1.583

1.663

1.703

1.743

1.823

1.863

1.903

1.943

2.023

2.063

2.103

2.143

2.231

2.263

2.304

2.344

2.424

2.464

2.504

2.584

2.624

2.664

2.704

2.784

2.824

2.864

2.904

2.984

3.024

3.064

3.145

3.185

3.225

3.265

3.345

1.950

1.997

2.092

2.139

2.187

2.282

2.329

2.376

2.424

2.519

2.566

2.613

2.661

2.756

2.803

2.850

2.898

2.993

3.040

3.087

3.182

3.230

3.277

3.324

3.419

3.467

3.514

3.561

3.656

3.704

3.751

3.846

3.893

3.941

3.988

4.083

2.333

2.389

2.500

2.555

2.611

2.722

2.777

2.833

2.888

2.999

3.055

3.110

3.166

3.277

3.330

3.388

3.443

3.554

3.610

3.665

3.776

3.832

3.887

3.943

4.054

4.109

4.165

4.220

4.331

4.387

4.442

4.553

4.609

4.664

4.720

4.831

3/8” 7/16” 1/ 2” 9/16” 5/8” 3/4” 7/8” 1” 1.1/8” 1.1/4” 1.3/8” 1.1/2” 1.5/8” 1.3/4”Length

DiaWEIGHT (kg) FOR 1 PIECE

30

Product Weight


11”

11.1/4”

11.1/2”

11.3/4”

12”

12.1/4”

12.1/2”

12.3/4”

13”

13.1/4”

13.1/2”

13.3/4”

14”

14.1/4”

14.1/2”

14.3/4”

15”

15.1/4”

15.1/2”

15.3/4”

16”

16.1/4”

16.1/2”

16.3/4”

17”

17.1/4”

17.1/2”

17.3/4”

18”

18.1/4”

18.1/2”

18.3/4”

19”

19.1/4”

19.1/2”

19 3/4”

280

285

290

300

305

310

320

325

330

335

345

350

355

360

370

375

380

385

395

400

405

415

420

425

430

440

445

450

455

465

470

475

485

490

495

500

0.153

0.155

0.158

0.162

0.164

0.166

0.168

0.173

0.175

0.177

0.181

0.183

0.186

0.188

0.192

0.194

0.196

0.199

0.203

0.205

0.207

0.209

0.214

0.216

0.218

0.222

0.224

0.227

0.229

0.233

0.235

0.237

0.242

0.244

0.246

0.248

4.886

4.942

4.997

5.108

5.164

5.219

5.275

5.386

5.441

5.497

5.608

5.663

5.719

5.774

5.886

5.940

5.996

6.052

6.163

6.218

6.274

6.329

6.440

6.496

6.551

6.662

6.718

6.773

6.829

6.940

6.995

7.051

7.162

7.217

7.273

7.328

0.208

0.210

0.213

0.219

0.222

0.225

0.228

0.234

0.237

0.240

0.246

0.249

0.251

0.254

0.260

0.263

0.266

0.269

0.275

0.278

0.281

0.284

0.290

0.292

0.295

0.301

0.304

0.307

0.310

0.316

0.319

0.322

0.328

0.331

0.333

0.336

0.294

0.298

0.302

0.310

0.314

0.318

0.322

0.330

0.334

0.338

0.346

0.350

0.354

0.358

0.366

0.370

0.374

0.378

0.386

0.390

0.394

0.398

0.406

0.410

0.414

0.422

0.426

0.430

0.435

0.443

0.447

0.451

0.459

0.463

0.467

0.471

0.364

0.369

0.374

0.384

0.389

0.394

0.399

0.409

0.414

0.419

0.429

0.434

0.439

0.444

0.454

0.459

0.464

0.469

0.479

0.483

0.488

0.493

0.503

0.508

0.513

0.523

0.528

0.533

0.538

0.548

0.553

0.558

0.568

0.573

0.578

0.583

0.464

0.470

0.476

0.489

0.496

0.502

0.508

0.521

0.527

0.534

0.546

0.553

0.559

0.565

0.578

0.584

0.591

0.597

0.610

0.616

0.623

0.629

0.642

0.648

0.654

0.667

0.673

0.680

0.686

0.699

0.705

0.711

0.724

0.730

0.737

0.743

0.709

0.719

0.728

0.747

0.756

0.765

0.775

0.794

0.803

0.812

0.831

0.840

0.850

0.859

0.878

0.887

0.896

0.906

0.924

0.934

0.943

0.952

0.971

0.981

0.990

1.009

1.018

1.027

1.037

1.055

1.065

1.074

1.093

1.102

1.111

1.127

0.989

1.001

1.014

1.040

1.053

1.065

1.078

1.104

1.117

1.129

1.155

1.168

1.181

1.193

1.219

1.232

1.245

1.257

1.283

1.296

1.309

1.327

1.347

1.360

1.373

1.398

1.411

1.424

1.437

1.462

1.475

1.488

1.513

1.526

1.539

1.552

1.327

1.343

1.360

1.394

1.411

1.427

1.461

1.478

1.495

1.511

1.545

1.562

1.579

1.595

1.629

1.646

1.663

1.679

1.713

1.730

1.747

1.763

1.797

1.814

1.831

1.864

1.881

1.898

1.915

1.948

1.965

1982

2.015

2.032

2.049

1.066

1.742

1.764

1.786

1.829

1.851

1.872

1.894

1.937

1.959

1.981

2.024

2.046

2.067

2.089

2.132

2.154

2.175

2.197

2.240

2.262

2.284

2.305

2.349

2.370

2.392

2.435

2.457

2.479

2.500

2.544

2.565

2.587

2.630

2.652

2.673

2.695

2.209

2.237

2.264

2.318

2.345

2.372

1.399

2.454

2.481

2.508

2.562

2.589

2.617

2.644

2.698

2.725

2.752

2.780

2.834

2.861

2.888

2.915

2.970

2.997

3.024

3.078

3.105

3.132

3.160

3.214

3.241

3.268

3.323

3.350

3.377

3.404

2.759

2.792

2.825

2.892

2.925

2.958

2.992

3.058

3.091

3.125

3.191

3.224

3.258

3.291

3.357

3.391

3.424

3.457

3.524

3.557

3.590

3.623

3.690

3.723

3.756

3.823

3.856

3.889

3.923

3.989

4.022

4.056

4.122

4.155

4.189

4.222

3.385

3.425

3.465

3.545

3.585

3.625

3.705

3.745

3.785

3.825

3.906

3.946

3.986

4.026

4.106

4.146

4.186

4.226

4.306

4.346

4.386

4.426

4.506

4.546

4.586

4.666

4.707

4.747

4.787

4.867

4.907

4.947

5.027

5.067

5.107

5.147

4.130

4.178

4.225

4.320

4.367

4.415

4.462

4.557

4.604

4.652

4.746

4.794

4.841

4.889

4.983

5.031

5.078

5.126

5.220

5.268

5.315

5.363

5.457

5.505

5.552

5.647

5.694

5.742

5.789

5.884

5.931

5.979

6.074

6.121

6.168

6.216

3/8” 7/16” 1/ 2” 9/16” 5/8” 3/4” 7/8” 1” 1.1/8” 1.1/4” 1.3/8” 1.1/2” 1.5/8” 1.3/4”Length

DiaWEIGHT (kg) FOR 1 PIECE

Unbrako®

31

Product Weight

2.830

2.894

3.022

3.086

3.150

3.278

3.342

3.406

3.470

3.598

3.662

3.716

3.790

3.918

3.982

4.046

4.110

4.238

4.302

4.366

4.430

4.494

4.558

4.622

4.685

4.814

4.878

4.942

5.006

5.134

5.198

5.262

5.390

5.454

5.518

5.582

5.710

3.394

3.467

3.613

3.686

3.759

3.905

3.978

4.051

4.124

4.270

4.343

4.416

4.489

4.635

4.708

4.781

4.854

5.073

5.146

5.219

5.292

5.365

5.438

5.511

5.584

5.730

5.803

5.803

5.876

6.022

6.095

6.168

6.314

6.387

6.460

6.533

6.679

4.667

4.761

4.948

5.041

5.135

5.322

5.415

5.509

5.602

5.789

5.883

5.976

6.070

6.257

6.350

6.444

6.537

6.724

6.818

6.911

7.005

7.098

7.192

7.285

7.379

7.566

7.639

7.753

7.846

8.033

8.127

8.220

8.407

8.501

8.594

8.688

8.875

6.282

6.398

6.631

6.748

6.864

7.097

7.214

7.330

7.447

7.680

7.796

7.913

8.029

8.262

8.379

8.495

8.612

8.845

8.961

9.078

9.194

9.311

9.427

9.544

9.660

9.893

10.010

10.126

10.246

10.476

10.592

10.709

10.942

11.058

11.175

11.291

11.524

7.953

8.094

8.377

8.519

8.660

8.943

9.085

9.226

9.368

9.651

9.792

9.934

10.075

10.358

10.500

10.641

10.783

11.066

11.207

11.349

11.490

11.632

11.773

11.915

12.056

12.339

12.481

12.622

12.764

13.047

13.188

13.330

13.613

13.754

13.896

14.037

14.320

9.769

9.938

10.277

10.447

10.616

10.955

11.125

11.294

11.464

11.803

11.972

12.142

12.311

12.650

12.820

12.989

13.159

13.498

13.667

13.837

14.006

14.176

14.345

14.515

14.684

15.023

15.193

15.362

15.532

15.871

16.040

16.210

16.549

16.718

16.888

17.057

17.396

11.970

12.173

12.578

12.780

12.983

13.388

13.590

13.793

13.995

14.400

14.603

14.805

15.008

15.413

15.615

15.818

16.020

16.425

16.628

16.830

17.033

17.235

17.438

17.640

17.843

18.048

18.450

18.653

18.855

19.260

19.463

19.665

20.070

20.273

20.475

20.678

21.083

15.499

15.735

16.207

16.443

16.679

17.151

17.387

17.623

17.859

18.331

18.567

18.803

19.039

19.511

19.747

19.983

20.219

20.691

20.927

21.163

21.399

21.635

21.871

22.107

22.343

22.815

23.051

23.287

23.523

23.995

24.231

24.467

24.939

25.175

25.411

25.647

26.119

18.579

18.844

19.374

19.639

19.904

20.434

20.699

20.964

21.229

71.759

22.024

22.289

22.554

23.084

23.349

23.614

23.879

24.409

24.674

24.939

25.204

25.469

25.734

25.999

26.264

26.794

27.059

27.324

27.589

28.119

28.384

28.649

29.179

29.444

29.709

29.974

30.504

22.948

23.253

23.862

24.166

24.470

25.079

25.384

25.688

25.992

26.601

26.906

27.210

27.514

28.123

28.428

28.732

29.036

29.645

29.950

30.254

30.558

30.863

31.167

31.472

31.776

32.385

32.689

32.994

33.298

33.907

34.211

34.516

35.124

35.429

35.733

36.038

36.646

WEIGHT (kg) FOR 1 PIECE

Length

Dia

1.7/8” 2” 2.1/4” 2.1/2” 2.3/4” 3” 3.1/4” 3.1/2” 3.3/4” 4”

50

60

65

70

75

80

90

95

100

110

115

120

125

130

140

145

150

160

165

170

175

180

185

190

195

200

210

215

220

230

235

240

250

255

260

265

275

2”

2.1/4”

2.1/2”

2.3/4”

3”

3.1/4”

3.1/2”

3.3/4”

4”

4.1/4”

4.1/2”

4.3/4”

5”

5.1/4”

5.1/2”

5.3/4”

6”

6.1/4”

6.1/2”

6.3/4”

6.7/8”

7”

7.1/4”

7.1/2”

7.3/4”

8”

8.1/4”

8.1/2”

8.3/4”

9”

9.1/4”

9.1/2”

9.3/4”

10”

10.1/4”

10.1/2”

10.3/4”


32

Product Weight

280

285

290

295

300

305

310

315

320

325

330

335

340

345

350

355

360

365

370

375

380

385

390

395

400

405

410

415

420

425

430

435

440

445

450

455

460

465

470

475

480

485

490

495

500

11''

11.1/4"

11.1/2"

11.5/8"

11.3/4"

12"

12.1/4"

12.1/2"

12.5/8"

12.3/4"

13"

13.1/4"

13.3/8"

13.1/2"

13.3/4"

14"

14.1/4"

14.3/8"

14.1/2"

14.3/4"

15"

15.1/4"

15.3/8"

15.1/2"

15.3/4"

16"

16.1/4"

16.3/8"

16.1/2"

16.3/4"

17"

17.1/8"

17.1/4"

17.1/2"

17.3/4"

18"

18.1/8"

18.1/4"

18.1/2"

18.3/4"

18.7/8"

19"

19.1/4"

19.1/2"

19.3/4"

5.774

5.838

5.902

5.966

6.030

6.094

6.158

6.222

6.286

6.350

6.414

6.478

6.542

6.606

6.670

6.734

6.798

6.862

6.926

6.990

7.054

7.118

7.182

7.246

7.310

7.374

7.438

7.502

7.566

7.630

7.694

7.758

7.822

7.886

7.950

8.014

8.078

8.142

8.206

8.270

8.334

8.398

8.462

8.526

8.590

6.752

6.825

6.898

6.971

7.044

7.117

7.190

7.263

7.336

7.409

7.482

7.555

7.628

7.701

7.774

7.847

7.920

7.993

8.066

8.139

8.212

8.285

8.358

8.431

8.504

8.577

8.650

8.723

8.796

8.869

8.942

9.015

9.088

9.161

9.234

9.307

9.380

9.453

9.526

9.599

9.672

9.745

9.818

9.891

9.964

8.968

9.062

9.155

9.249

9.342

9.436

9.529

9.623

9.716

9.810

9.903

9.997

10.090

10.184

10.277

10.371

10.464

10.558

10.651

10.745

10.838

10.932

10.025

11.119

11.212

11.306

11.399

11.493

11.586

11.680

11.773

11.867

11.960

12.054

12.147

12.241

12.334

12.428

12.521

12.615

12.708

12.802

12.895

12.989

13.082

11.641

11.757

11.874

11.990

12.107

12.223

12.340

12.456

12.573

12.689

12.806

12.922

13.039

13.155

13.272

13.388

13.505

13.621

13.738

13.854

13.971

14.087

14.204

14.320

14.437

14.553

14.670

14.786

14.903

15.019

15.136

15.252

15.369

15.485

15.602

15.718

15.835

15.951

16.068

16.184

16.301

16.417

16.534

16.650

16.767

14.462

14.603

14.745

14.886

15.028

15.169

15.311

15.452

15.594

15.735

15.877

16.018

16.160

16.301

16.443

16.584

16.726

16.867

17.009

17.150

17.292

17.433

17.575

17.716

17.858

17.999

18.141

18.282

18.424

18.565

18.707

18.848

18.990

19.131

19.273

19.414

19.556

19.697

19.839

19.980

20.122

20.263

20.405

20.546

20.688

17.566

17.735

17.905

18.074

18.244

18.413

18.583

18.752

18.922

19.091

19.261

19.430

19.600

19.769

19.939

20.108

20.278

20.447

20.617

20.786

20.956

21.125

21.295

21.464

21.634

21.803

21.973

22.142

22.312

22.481

22.651

22.820

22.990

23.159

23.329

23.498

23.668

23.837

24.007

24.176

24.346

24.515

24.685

24.854

25.024

21.285

21.488

21.690

21.893

22.095

22.298

22.500

22.703

22.905

23.108

23.310

23.513

23.715

23.918

24.120

24.323

24.525

24.728

24.930

25.133

25.535

25.538

25.740

25.943

26.145

26.348

26.550

26.753

26.955

27.158

27.360

27.563

27.765

27.968

28.170

28.373

28.575

28.778

28.980

29.183

29.385

29.588

29.790

29.993

30.195

26.355

26.591

26.827

27.063

27.299

27.535

27.771

28.007

28.243

28.479

28.715

28.951

29.187

29.423

29.659

29.895

30.131

30.367

30.603

30.838

31.075

31.311

31.547

31.783

32.019

32.255

32.491

32.727

32.963

33.199

33.435

33.671

33.907

34.143

34.379

34.615

34.851

35.087

35.323

35.559

35.795

36.031

36.267

36.503

36.739

30.769

31.034

31.299

31.564

31.829

32.094

32.359

32.624

32.889

33.154

33.419

33.684

33.949

34.214

34.479

34.744

35.009

35.274

35.539

35.804

36.069

36.334

36.599

36.864

37.129

37.394

37.659

37.924

38.189

38.454

38.719

38.984

39.249

39.514

39.779

40.044

40.309

40.574

40.839

41.104

41.369

41.634

41.899

42.164

42.429

36.951

37.255

37.560

37.864

38.168

38.473

38.777

39.082

39.386

39.690

39.995

40.299

40.604

40.908

41.212

41.517

41.821

42.126

41.430

42.734

43.039

43.343

43.648

43.952

44.256

44.561

44.865

45.170

45.474

45.778

46.083

46.387

46.692

46.996

47.300

47.605

47.909

48.214

48.518

48.822

49.127

49.431

49.736

50.040

50.344

WEIGHT (kg) FOR 1 PIECE

Length

Dia

1.7/8” 2” 2.1/4” 2.1/2” 2.3/4” 3” 3.1/4” 3.1/2” 3.3/4” 4”


Unbrako®

33

website: www.unbrako.com / e-mail: [email protected]

ORLD IDE Access

BSI

0045

BSI

ISO/TS 16949:2002ISO 9001:2000

Engineered for Engineers

Unbrako®

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