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है”ह”ह

IS 13724 (2002): Hexagon Thin Nuts (Chamfered) with MetricFine Pitch Thread - Product Grades A and B [PGD 31: Bolts,Nuts and Fasteners Accessories]

IS 13724:2002ISO 8675:1999

( Wa7 ~gw!i!im)Indian Standard

HEXAGON THIN NUTS (CHAMFERED) WITH METRICFINE PITCH THREAD — PRODUCT

(First Revision )

ICS 21.060.20

GRADES A AND B

,’

Q BIS 2002

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

/Voven7ber 2002 Price Group 3

Bolts, Nuts and Fasteners Accessories Sectional Committee, BP 33

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 8675:1999 ‘Hexagon thin nuts (chamfered)with metric fine pitch thread—Product grades A and B’ issued by the International Organization forStandardization (ISO), was adopted by the Bureau of Indian Standards on the recommendation of theBolts, Nuts and Fasteners Accessories Sectional Committee and approval of the Basic and ProductionEngineering Division Council.

This standard was originally published in 1993 by adoption of ISO 8675:1988. This first revision hasbeen made by adoption of the latest version of ISO 8675 published in 1999.

The text of ISO Standard has been approved as suitable for publication as Indian Standard withoutdeviation. Certain terminology and conventions are, however, not identical to those used in the IndianStandards. Attention is drawn especially to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they shouldbe read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practiceis to use a point (.) as the decimal marker.

In this adopted standard, reference appears to certain International Standards for which Indian Standardsalso exist. The corresponding Indian Standards which are to be substituted in their place are listed belowalong with their degree of equivalence for the editions indicated:

International Standard Corresponding Indian Standard Degree ofEquivalence

ISO 225:1983 IS 8536:1987 Fasteners—Bolts, Identicalscrews, studs and nuts—Symbolsand designation of dimensions (firstrevision)

ISO 724:1993 1S 4218 (Part 3):1 999 ISO General dopurpose metric screw threads:Part 3 Basic dimensions (secondrevision)

ISO 898-6:1994

ISO 965-1:1998

ISO 3269:1)

ISO 3506-2:1997

IS 13096:2000 Fasteners—Hexagonnuts with specified proof loadvalues—Fine pitch threads—Mechanical properties (first revision)

IS 14962 (Part 1) :2001 ISO Generalpurpose metric screw threads—Tolerances: Part 1 Principles andbasic data

IS 1367 (Part 17) : 19962) Industrialfasteners—Threaded steel fasteners—Technical supply conditions : Part 17Inspection, sampling and acceptanceprocedure (third revision)

IS 1367 (Part 14/See 2):-3) Technicalsupply conditions for threaded steelfasteners: Part 14 Mechanicalproperties of corrosion resistantstainless-steel fasteners, Section 2Nuts (third revision)

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do

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;---, -

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>.,?.

‘JTo be published (Revision of ISO 3269).ZI Identical with ISO 3269:1988.

3,To be published.(Continued on third cover)

IS 13724:2002ISO 8675:1999

Indian Standard

HEXAGON THIN NUTS (CHAMFERED) WITH METRICFINE PITCH THREAD — PRODUCT GRADES A AND B

(First Revision )

1 Scope

This International Standard specifies the characteristics of hexagon thin nuts (chamfered), with metric fine pitchthread, with nominal thread diameters d from 8 mm up to and including 64 mm, with product grade A for sizes u’ upto and including 16 mm and product grade B for sizes d over 16 mm.,

If, in special cases, specifications other than those listed in this International Standard are required, they should beselected from existing International Standards, for example ISO 724, ISO 898-6, ISO 965-1, ISO 3506-2 and1s04759-1.

Coarse thread hexagon nuts according to ISO 4035 should be the first choice.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions ofthis International Standard. For dated references, subsequent amendments to, or revisions of, any of thesepublications do not apply. However, parties to agreements based on this International Standard are encouraged toinvestigate the possibility of applying the most recent editions of the normative documents indicated below. Forundated references, the latest edition of the normative document referred to applies. Members of ISO and IECmaintain registers of currently valid International Standards.

ISO 225:1983, Fasteners — Bolts, screws, studs and nuts — Symbols and designations of dimensions.

ISO 724; 1993, 1S0 general-purpose metric screw threads — Basic dimensions,

ISO 898-6:1994, Mechanical properties of fasteners — Part 6: Nuts with specified proof load values — Fine pitchthread.

ISO 965-1:1998, ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data.

ISO 3269:—1 ), Fasteners — Acceptance inspection.

ISO 3506-2:1997, Mechanical propetiies of corrosion-resistant stainless-steel fasteners — Part 2: Nuts.

ISO 4042:1999, Fasteners — E/ectrop/ated coatings.

ISO 4759-1 :—2), Tolerances for fasteners — Part 1: Bolts, screws, studs and nuts — Product grades A, B and C.

ISO 6157-2:1995, Fasteners — Surface discontinuities — Part 2: Nuts.

ISO 8839:1986, Mechanical properties of fasteners — Bolts, screws, studs and nuts made of non-ferrous metals.

1

k’

1) To be published. (Revision of ISO 3269:1988)

‘1 To be published. (Revision of ISO 4759-1:1 978)

IS 13724:2002

ISO 8675:1999

-

—,“,,,,

ISO 8992:1986, Fasteners — General requirements for bolts, screws, studs and nuts.

ISO 10683:—3), Fasteners — Non-electrolytically applied zinc flake coatings.

3 Dimensions

See Figure 1, Tables 1 and 2.

Symbols and descriptions of dimensions are defined in ISO 225.

Pamw

[

.

L

mI I

I-J--la /l=15”to30”b e =90 °t0120”

Figure 1

3, To be published.

2

IS 13724:2002

ISO 8675:1999

Table 1 — Preferred threads

Dimensionsin millimetre!I I II I I I I I I I

IThread(dxf’) \M8xllMloxllM12 xl,51M16xl,5\Mmxl,51 M24x21M30x2 M36x3 M42x31 M46x31 M56x41 M64x4

damsx. 8,75 10,8 13 17,3 21,6 25,9 32,4 36,9

36,0

51,11

60,79 +++

45,4 51,8 60,5 69,1

42,0 46,0 56,0 64,0

59,95 69,45 78,66 88,16

71,3 82,6 93,56 104,86

min. 8,00 10,0 12 16,0 20,0 24,0 30,0

dw nnn. 11,63 14,63 16,63 22,49 27,7 33,25 42,75

e min. 14,36 17,n 20,03 26,75 32,95 39,55 50,85

msx 4,0 5,0 6,0 8,00 10,0 12,0m

15,0

min. 3,7 4,7 5,7 7,42 9,1 10,9 13,9

mw min. 2,96 3,76 4,56 5,94 7,28 8,72 11,12

nom.. msx. 13,CK3 16,00 18,C0 24,00 30,02 36s

46

*

18,0

16,9

#

15,76 18,16 21,36 24,32

65,0 75,0 85,0 95,0

63,1 73,1 82,8 92,8

13,52

55,0

53,6min. 12,73 15,73 17,73 23,67 29,16 35 45

Table 2 — Non-preferred threads

Dimensions in millimetresI 1 1 I I

M33x2 M39 X 3 M45x3 M52 X 4 M60x4

35,6 42,1 46,6 56,2 64,8

33,0 39,0 45,0 52,0 60,0

M27 X 2

29,1

27,0

damsx. 10,8 13

I I. ..-. -

19,64 24,85 27,7 31,35

23,36 29,56 32,95 37,29

7,00 9,00 10,0 11,0

6,42 8,42 9,1 9,9

36

45,2

mmax.1 5,o I 6,0 13,5

1 1 I 1

15,4 18,2 21,2 24,7 28,7min. 4,7 5,7.

% min. 3,76 4,56

12,4

9,92

41

40

snom,= max.] 16,00 ] 1800

min.1 15,73 I 17,73 20,67 I 26,16 / 29,16 j 33

3

IS 13724:2002

ISO 8675:1999

4 Specifications and reference standards

See Table 3.

Table 3 — Specification and reference standards

Material Steel Stainless steel Non-ferrousmetal

~eneral International ISO 8992

requirements Standard

Thread Tolerance 6H

International ISO 724, ISO 965-1

Standards

Mechanical Property d 39 mm: as agreed 24 mm < ds 39 mm: A2-025, specified in

A4-025 1S0 8839

d >39 mm: as agreed

International d 39 mm: as agreed d >39 mm: as agreed

Tolerances Product grade d 16 mm: B

International 1s04759-1Standard

Finish and/or coating As processed Plain Plain

Requirements for Requirementselectroplating are for electroplating

covered in are coveredISO 4042 in 1S0 4042

Requirements for non-electrolytically appliedzinc flake coatings arecovered in ISO 10683

If different electroplating requirements are desired or if requirements areneeded for other finishes, they should be negotiated between customer andsupplier.

Limits for surfacediscontinuities arecovered in ISO 6157-2

Acceptability , For acceptance procedure, see 1S0 3269.

,.},

5 Designation

EXAMPLE:

A hexagon thin nut (chamfered) with thread Ml 6 x 1,5 and property class 05 is designated as follows:

Hexagon nut ISO 8675- M16 x 1,5-05

4

IS 13724:2002

ISO 8675:1999

Bibliography

[1]I

[2]

1

[3]

[4]

[5]

[6]

[7]

[8]

[9]

ISO 4014:1999, Hexagon head bolts — Product grades A and B.

ISO 4015:1979, Hexagon head bolts — Product grade B — Reduced shank (shank diameter approximatelyequal to pitch diameter). ,

ISO 4016:1999, Hexagon head bolts — Product grade C.

ISO 4017:1999, Hexagon head screws — Product grades A and B.

ISO 4018:1999, Hexagon head screws — Product grade C.

ISO 4032:1999, Hexagon nuts, style 1 — Product grades A and B.

ISO 4033:1999, Hexagon nuts, style 2 — Product grades A and B.

ISO 4034:1999, Hexagon nuts — Product grade C.

ISO 4035:1999, Hexagon thin nuts (chamfered) — Product grades A and B.

[10] ISO 4036:1999, Hexagon thin nuts (unchamfered) — Product grade B.

[11] ISO 4161:1999, Hexagon nuts with flange — Coarse thread.

[12]

[13]

[14]

[15]

ISO 41 62:—4), Hexagon bolts with flange — Small series — Product grade combination A/B.

ISO 4775:1984, Hexagon nuts for high-strength structural bolting with large width across flats — Productgrade B — Propetiy classes 8 and 10.

ISO 7411:1984, Hexagon bolts for high-strength structural bo/ting with large width across flats (thread lengthsaccording to /S0 888) — Product grade C — Property classes 8.8 and 10.9.

ISO 7412:1984, Hexagon bolts for high-strength structural bolting with large width across flats (short threadlength) — Product grade C’— Propetty classes 8.8 and 10.9.

..- ---

[16] ISO 7413:1984, Hexagon nuts for structural bolting, style 1, hot-d~ galvanized (oversize tapped) — Productgrades A and B — Property classes 5, 6 and 8.

[17] ISO 7414:1984, Hexagon nuts for structura/ boking with large width across f/ats, sty/e 1 — Product grade B —Property class 10.

[18]ISO 7417:1984, Hexagon nuts for structura/ bo/ting, style 2, hot-dip galvanized (oversize tapped) — Productgrade A — Property class 9.

[15] ISO 8673:1999, Hexagon nuts, style 1, with metric fine pitch thread — Product grades A and B.

[20] 1S0 8674:1999, Hexagon nuts, sty/e 2, with metric fine pitch thread — Product grades A and B.

[21 ] 1S0 8676:1999, Hexagon head screws with metric fine pitch thread — Product grades A and B.

[22] ISO 8765:1999, Hexagon head bolts with metric fine pitch thread – Product grades A and B.

[23] ISO 10663:1999, Hexagon nuts with f/ange — Fine pitch thread.

[24] ISO 15071:1999, Hexagon bo/ts with f/ange — Small seties — Product grade A.

4, To be published.(Revision of ISO 4162:1990)

5

(Continued from second cover)

International Standard

ISO 4042:1999

1s0 4759-1 :–’)

ISO 6157-2:1995

ISO 8992:1986

Corresponding Indian Standard Degree ofEquivalence

IS 1367 (Part 11) :2002 Technical Identicalsupply conditions for threaded steelfasteners: Part 11 Electroplatedcoatings (third revision)

IS 1367 (Part 2) :2002 Technical dosupply conditions for threaded steelfasteners: Part 2 Product grades andtolerances (third revision)

IS 1367 (Part 10) :2002 Technicalsupply conditions for threaded steelfasteners: Part 10 Surfacediscontinuities—Nuts (third revision)

IS 1367 (Part 1) :2002 Technicalsupply conditions for threaded steelfasteners: Part 1 Introduction andgeneral information (third revision)

do

do

The concerned technical committee has reviewed the provision of following ISO Standards referred inthis adopted standard and has decided that they are acceptable for use in conjunction with this standard:

ISO Standard Title

ISO 8839:1986 Mechanical properties of fasteners — Bolts, screws, studs and nuts made ofnon-ferrous metals

ISO 16048:–2) Passivation of corrosion-resistant stainless steel fasteners—Passivation processand acceptance criteria

ALTERATION

In clause 5 the designation of hexagon (chamfered) nut, with thread Ml 6 x 1.5 and property class 05may be read as:

‘Hexagon thin nut—lS 13724/1S0 8675- M16 x 1.5-05’ in p/ace of ’Hexagon nut - ISO 8675-M16 x 1.5-05’.

PACKAGING

The packaging of hexagon thin nut shall be in accordance with IS 1367 (Part 18):1 996 ‘Industrial fasteners—Threaded steel fasteners—Technical supply conditions: Part 18 Packaging (third revision)’.

BIS CERTIFICATION MARKING

Details available with the Bureau of Indian Standards.

For the purpose of deciding whether a particular requirement of this standard is complied with, the finalvalue, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordancewith IS 2:1960 ‘Rules for rounding off numerical values (revised)’. The number of significant placesretained in the rounded off value should be the same as that of the specified value in this standard.

,:...-.-

[~

—.‘) Since revised in 2000.‘! To be published,

Bureau of Indian Standards

BIS is a statuto~ institution established under the Bureau of Zndian Standards Act, 1986 to promote harmoniousdevelopment of the activities of standardization, marking and quality certification of goods and attending toconnected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications maybe reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course of implementingthe standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating tocopyright be addressed to the Director (Publication), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is rea.fllrrned when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of‘BIS Catalogue’ and’ Standards: Monthly Additions’.

This Indian Standard has been developed from Dot: No. BP 33 (0121).

Amendments Issued Since Publication

Amend No. Date of Issue Text AtTected

$

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