Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

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“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

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“Invent a New India Using Knowledge”

है”ह”ह

IS 13723 (2002): Hexagon Nuts Style 2 with Metric FinePitch Thread - Product Grades A and B [PGD 31: Bolts, Nutsand Fasteners Accessories]

IS 13723:2002

ISO 8674:1999

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&

HEXAGON

Wkm--Ri-sydl?dl(Wd7!p%m,)

Indian Standard

NUTS STYLE 2 WITH METRICFINE PITCH THREAD — PRODUCT

(First Revision )

ICS 21.060.20

GRADES A AND B

I

I

@ BIS 2002

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002I

I November 2002I

Price Group 3

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I

Bolts, Nuts and Fasteners Accessories Sectional Committee, BP 33

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 8674:1999 ‘Hexagon nuts, style 2, withmetric 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 1994 by adoption of ISO 8674:1988. This first revision hasbeen made by adopting the latest version of ISO 8674 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.

LSO 724:1993

ISO 898-6:1994

ISO 965-1:1998

ISO 3269:1)

ISO 4042:1999

do

do

do

do

do

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 places are listedbelow along 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—Symbols anddesignation of dimensions (firstrevision)

IS 4218 (Part 3):1999 ISO Generalpurpose metric screw threads:Part 3 Basic dimensions (secondrevision)

IS 13096:2000 Fasteners—Hexagonnuts with specified proof loadvalues—Fine pitch thread—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 11 ):2002 Technicalsupply conditions for threaded steelfasteners: Part 11 Electroplatedcoatings (third revision)

I

I) TO be published (Revision of ISO 3269).Z)lden~~~l with ISO 3269:1988.

(Continued on third cover)

IS 13723:2002 $

ISO 8674:19994

i,i:~

Indian Standard ,,4.,

HEXAGON NUTS STYLE 2 WITH METRIC I

FINE PITCH THREAD— PRODUCT GRADES A AND B

(First Revision )..

This International Standard specifies the characteristics of hexagon nuts, style 2, with metric fine pitch thread, withnominal thread diameters d from 8 mm up to and including 36 mm, with product grade A for sizes d up to andincluding 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 and ISO 4759-1.

Coarse thread hexagon nuts, style 2, according to ISO 4033 should be the first choice.

NOTE For hexagon nuts, style 1, with fine pitch thread, see ISO 8673.

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 [ECmaintain registers of currently valid International Standards.

LSO 2251983, Fasteners — Bolts, screws, studs and nuts — Symbols and designations of dimensions.

ISO 724:1993, ISO general-purpose metric screw threads — Basic dimensions.

LSO 898-6:1994, Mechanical propeflies 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 4042:1999, Fasteners — Electroplated 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.

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

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

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

2, To be published. (Revision of 1S0 4759-1:1 978)

3, To be published.

--- ..

IS 13723:2002ISO 8674:1999

3 Dimensions

See Figure 1, Tables 1 and 2.

Symbols ar,{ descriptions of dimensions are defined in ISO 225.

P’c

mW

@ ‘p@

a

“m g .—. m ~~ .— m3

e

. . al

mW mW sm m

a Washer-face form to be ordered separately.b p=15”to 30”

c e =90°to 120°

Figure 1

2

IS 13723:2002ISO 8674:1999

Table 1 — Preferred threads

Dimensions in millimetres1 1 I I

Thread (d x P) M8X1 M1OX1 M12x1,5 M16x1,5 M20 X 1,5 M24 X 2 I M30 X 2 I M36 X 3 Imax.~,

min.

0,60 I 0,60 I 0,60 1 0,8 0,8 I 0,8 I 0,8 I 0,8 I0,2

I0,2

I0,2

I0,2 I0,15 I 0,15 I 0,15 I 0,2

max.da

8,75 I 10,8 I 13 [ 17,3 21,6 I 25,9 I 32,4 I 38,9 Imin.

dw min.

e min. I 14,38 I 17,7’7 I 20,03 I 26,75 32,95 \ 39,55 I 50,85 I 60,79 I

434,7

33,1

26,48

1

nom. = max..7

13,00 I 16,00 I 18,00 I 24,00 30,00 I 36 I 46 I 55,0 I12,73 I 15,73 I 17,73 I 23,67 29,16 I 35 I 45 I 53,8 Imin.

Table 2 — Non-preferred threads

Dimensions in millimetres

Thread (d x P) M1OX1,25 M.12x 1,25 M14x1,5 M18x1,5 M20x2 M22x1,5 M27 X 2 M33 X 2 I-----

0,60 I 0,60 I 0,60 I 0,8 I 0,8 I 0,8 I 0,8 0,8 Imax.~0,15 I 0,15 I 0,15 I 0,2 I 0,2 I 0,2 I 0,2

i

0,2

35,6

min.

10,8I

12I

15,1I

19,5 I 21,6 I 23,7 I 29,1max.da10,0 I 13 I 14,0 I 18,0 I 20,0 I 22,0 I 27,0

-i

33,0

46,55

min.

14,63 I 16,63 I 19,64I 24,85 I 27,7 I 31,35 I 38(Iw min.

~

55,37

32,5

17,77 20,03 23,36 29,56 32,95 37,29 45,2

9,30 12,00 14,1 17,6 20,3 21,8 26,7

8,94 11,57 13,4 16,9 19,0 20,5 25,4

7,15 9,26 10,72 13,52 15,2 16,4 20,32

e min.

max.m

min. 430,924,72nl~ min.16,00 I 18,00 I 21,00 I 27,00 I 30,00 ] 34 I 41 50

49 i

nom. = max.s

15,73 17,73 20,67 26,16 29,16 33 40min.

3

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IS 13723:2002

ISO 8674:1999

4 Specifications and reference standards

See Table 3.

Table 3 — Specification and reference standards

flaterial Steel

>eneral requirements International Standard ISO 8992

“bread Tolerance 6H

International Standards ISO 724, ISO 965-1

flechanical Property classa ~< 16rnrn:8, 12

wopertiesd16mm:B

International Standard 1s04759-1

‘inish and/or coating As processed

Requirements for electroplating are covered in 1S0 4042.

Requirements for non-electrolytically applied zinc flakecoatings are covered in ISO 10683.

If different electroplating requirements are desired or ifrequirements are needed for other finishes, they should benegotiated between customer and supplier.

Limits for surface discontinuities are covered in ISO 6157-2,

acceptability For acceptance procedure, see ISO 3269.

‘ For other property classes see ISO 898-6.

..k;

5 Designation

EXAMPLE:

A hexagon nut, style 2, with thread Ml 6 x 1,5 and property class 12 is designated as follows:

Hexagon nut ISO 8674- M16 x 1,5-12

IS 13723:2002ISO 8674:1999

Bibliography

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[1o]

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, sty/e 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.

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

[11 ] ISO 4161:1999, Hexagon nuts with f/ange – Coarse thread.

[12] ISO 41 62:—4), Hexagon bo/ts with flange — Small series — Product grade combination A/B.

[13]ISO 4775:1984, Hexagon nuts for high-strength structura/ bo/ting with large width across f/ats — Product

[14]

[15]

[16]

[17]

[18]

grade B — Property classes 8 and 10. \

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

ISO 7413:1984, Hexagon nuts for structural bolting, style 1, hot-dip galvanized (oversize tapped) — Productgrades A and B — Propefly classes 5, 6 and 8.

ISO 7414:1984, Hexagon nuts for structural bolting with large width across flats, style 1 — Product grade B —Propetiy class 10.

ISO 7417:1984, Hexagon nuts for structural bolting, style 2, hot-dip galvanized (oversize tapped) — Productgrade A — Propefly class 9.

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

[20] ISO 8675:1999, Hexagon thin nuts (chamfered) wjth metric fine pitch thread — Product grades A and B.

[21] ISO 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 series — Product grade A.

,-------

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

5

(Continued from second cover)

International Standard

1s0 4759-1 :-1)

ISO 6157-2:1995

ISO 8992:1986

Corresponding Indian Standard

IS 1367 (Part 2):2002 Technical supplyconditions 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 Technical supplyconditions for threaded steelfasteners: Part 1 Introduction andgeneral information (third revision)

Degree ofEquivalence

Identical

do

do

The concerned Technical Committee has reviewed the provisions of following ISO Standard referred inthis adopted standard and has decided that it is 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

ALTERATION

[nclause 5 the designation of hexagon nut, style 2 with thread Ml 6 x 1.5 and property class 12 shall beread as:

‘Hexagon nut—lS ~3723/lSO 8674-M16 x 1.5-12’ in place of ‘Hexagon nut-lSO 8674-M16 xl.5 -12’.

PACKAGING

The packaging of hexagon nut shall be done in accordance with IS 1367 (Part 18):1996 ‘Industrialfasteners—Threaded steel fasteners—Technical supply conditions: Part 18 Packaging (third revision)’.

CORRIGENDUM

(Page 3, Tab/e 2, co/3)—The maximum and minimum values of d. for size M 12x 1.25 shall be read as‘13 and 12’ in p/aceof’12 and 13’ respectively.

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.

>---

,>

B(l~~ilu of Indiiln Standards

B 1S is a statutov institution established under the Bureau of Indian 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 may be 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 bc addressed to the Director (Publication), BIS.

Review of In(liiin Stilndards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedpcriodici]lly: a standard along with amendments is reaftlrmed when such review indicates that no changes arenccdcd; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould asccrt ain that they are in possession of the latest amendments or edition by referring to the latest issue of‘BlS Catalogue> and ‘Standards: Monthly Additions’.

This Indian Standard has been developed from DOC:No. BP 33 (0120).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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