IS 1364 ( Part 2 ) : 1992

IS0 4017 : 1988

Indian Standard

HEXAGON HEAD BOLTS, SCREWS AND NUTS OF PRODUCT GRADES A AND B

PART 2 HEXAGON HEAD SCREWS

( SIZE RANGE Ml’6 TO M64 )

( Third Revision ) Second Reprint AUGUST 1997

U DC 621’882’211

@BE 1992

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

October 1992 Price Group 4

Bolts, Nuts and Fastener Accessories Sectional Committee, LM 14

NATIONAL FOREWORD

This Indian Standard ( Part 2 ) which is identical with IS0 4017 : 1988 ‘Hexagon head screws - Product grades A and B’ issued by the International Organization for Standardization ( ISO,) was adopted by the Bureau of Indian Standards on the recommendation of the Bolts, Nuts and Fastener Accessories Sectional Committee ( LM 14 ) and approval of the Light Mechanical Engineering Division Council.

The standard was originally published in 1960 and revised in 1967, Subsequent to the publication of 1967 edition, many changes had been agreed upon at international level which have been reflected in IS 1367 series of standards covering ‘Technical supply conditions for threaded steel fasteners’. Accordingly, the standard was published in 5 parts covering hexagon head bolts, hexagon head screws, hexagon nuts, hexagon thin nuts ( chamfered ) and hexagon thin nuts ( unchamfered ).

The second revision of the standard was based on IS0 4017 : 1979 ‘Hexagon head screws of Product grades A and B’ issued by ISO. This third revision has been made by the adoption of latest version of IS0 4017 published in 1988 as Part 2. The remaining parts of the standard that is, Part 1, 3, 4 and 5 have also been revised by adoption of corresponding latest version of International Standards. The following major changes have been made in this revision:

a) The range of sizes has been enlarged to cover sizes from Ml ‘6 to M64;

b) The range of nominal lengths has been extended up to 500 mm;

c) Non-preferred sizes have been included in separate table in line with IS0 4017;

d) Stainless steel bolts with property classas A2-70 and A2-50 have been included; and

e) The use of property classes like 4.6, 4.8, 5.8, 6.8 and 9.8 are also permitted subject to the agreement between the manufacturer and user.

In the 1967 version of this standard, the width across flats for Ml0 and Ml2 size fasteners was specified as 17’ mm and 19 mm respectively. However, in the 1983 version this width across flats was brought in line with IS0 4016 : 1979 and specified as 16 mm and 18 mm respectively for Ml0 and Ml2 size fasteners. Reccgnizing the fact that the new width across flat dimensions could not be implemented immediately, the Explanatory Note to 1983 version of the standard made a reference to this aspect. However, in the absence of specific coverage in the standard, the new width across flat dimensions could not be implemented. Recognizing the difficulty of immediate changeover to new width across flats, the Committee felt that definite time frame may be given to the manufacturers for changeover and accordingly, it has been decided that width across flats as per 1967 version, that is, 17 mm and 19 mm for Ml 0 and 12 size fasteners shall be permitted till 31 December 1994.

It is also understood that some manufacturers are already equipped and manufacturing as per new width across flat dimensions and supplies as per new specifications are encouraged. During this period, the manufacture of fasteners as per old versions shall be phased out and by 1 January 1995, it is expected that the entire fastener industry would have switched over to new width dimensions across flats and no old width across flats shall be permitted.

In the adopted standard certain terminology and conventions are not identical with those used in Indian Standards; attention is specially drawn to the following:

a) Wherever the words ‘International Standard’ appear, should be read as ‘Indian Standard’; and

referring to this standard, they

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

( Continued on third cover )

IS 1364 (Part2) : 1992 IS0 4017 : 1999

Indian Standard

HEXAGON HEAD BOLTS, SCREWS AND NUTS OF PRODUCT GRADES A AND B

PART 2 HEXAGON HEAD SCREWS ( SIZE RANGE Ml’6 TO M64 )

( Third Revision )

0 Introduction *

This International Standard is part of the complete IS0 product standard series on hexagon drive fasteners. The series comprises:

al

b)

cl

d)

e)

f)

9)

hexagon head bolts (IS0 4014, IS0 4015, IS0 4016 and IS0 8765);

hexagon head screws (IS0 4017, IS0 4018 and IS0 8676);

hexagon nuts (IS0 4032, IS0 4033, IS0 4034, IS0 4035, IS0 4036, IS0 8673, IS0 8674 and IS0 8675);

hexagon flanged bolts (IS0 4162 and IS0 8102);

hexagon flanged screws; l)

hexagon flanged nuts (IS0 4161, IS0 7043 and IS0 7044);

structural bolting (IS0 4775, IS0 7411 to IS0 7414 and IS0 7417).

1 Scope and field of application

This International Standard gives specifications for hexagon head screws with threads from Ml,6 up to and including M64, of product grade A for threads Ml,6 to M24 and nominal lengths up to and including 10d or 150 mm, whichever is shorter, and product grade 6 for threads over M24 or nominal lengths over 10d or 150 mm, whichever is shorter.

NOTE - This type of product is the same as that covered by IS0 4014 with the exception of threading up to the haad and nominal length up to and including 200 mm as popular lengths.

If, in special cases, specifications ,6ther than those listed in this International Standard are required, they should be selected from existing International Standards, for example IS0 261, IS0 888, IS0 898-l. IS0 965-2, IS0 3506 and IS0 4759-l.

1) These will form the subjects of future International Standards.

1

IS 1364 (Part2) : 1992 IS0 4017 : 1998

2 References

IS0 226, Festeners - Bolts, screws and nuts - Symbols and designations of dimensions.

IS0 261, IS0 generel purpose metric screw threads - General plan.

IS0 886, Bolts, screws 8nd studs - Nominel lengths and thread lengths for general purpose bolts and screws.

IS0 898-1, Mechanic8f properties of fasteners - Part 1: Bolts, screws and studs.

IS0 9652, IS0 general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose bolt and nut threads - Medium quality.

IS0 3269, Festeners - Acceptance inspection.

IS0 3606, Corrosion-resistant stainless steel fasteners - Specifications.

IS0 3608, Threed run-outs and fasteners with thread in accordance with IS0 261 and IS0 2S2.

IS0 4042, Threaded components - Electroplated coatings. ‘)

IS0 4763, FBsteners - Ends of parts with external metric IS0 thread.

IS0 4759-1, Tolerences for fasteners - Part 1: Bolts, screws 8nd nuts with thread diameters > 1,6 and < 150 mm and product grades A, B 8nd C.

Is’0 6167-1, F8StenerS - Surface discontinuities - Part 1: Bolts, screws and studs for general requirements. ‘)

IS0 6167-3, Fasteners - Surface discontinuities - Part 3: Bolts, screws and studs for special requirements. l)

IS0 8839, Mechenic8f properties of fasteners - Bolts, screws, studs ard nuts made of non-ferrous metals.

IS0 8992, Fasteners - General requirements for bolts, screws and nuts.

1) At present at the stage of draft.

2

IS 1364 ( Part 2 ) : 1992 IS0 4017 : ts&B

3 Dimensions

NOTE - Symbols and descriptions of dimensions are specified in IS0 225.

Dimensions in millimetres

Point must be chamfered

as-rolled (sheared end)

X

k’ ;-I

_,c a,

rr 1

Qr a’

Referee datum for d, - a”

_o__l

1) Incomplete thread u < 2 P

2) d, - pitch diameter.

3

Permissible shape

a

t-l

max.21 min.

min.

IlWX.

max.

4 Product grade $ min.

Product grade $ min.

nom.

min. Product grade A -

max.

min. Product grade B -

max.

k’31

r

s

Product grade $ min.

min.

nom. = max.

Product grade $- min.

Product grade

A B

I 4)

Table 1 - Preferred threads Dimensions in millimetres

IS 1364 (Part2) : 1992 IS0 4017 : 198s

4 Specifications and reference standards

Table 3 - Specifications and reference standards

Material steel I

Stainless steel I

Non-ferrous metal

General requirements

llwead

International Standard

Tolerance

International Standards

IS0 8992

ss

IS0 261. IS0 966-2

Mechsnicsl properHer

d < 3mm:asagreed d < 20 mm: A2-70 Classt) 3 mm < d < 39 mm: 5.6, 8.8, 10.9 2Crmm<d<39mm:A2-50 . . . . . . . .

d > 39mm:asagreed d > 39mm: asagreed

International Standards d < 39 mm: IS0 898-l d<39mm:ISO3506

d < 3mmandd > 39mm:asagreed d > 39 mm: asagreed IS0 8839

Anlrh

Acceptsbility

as processed I plain I plain

Requirements for electroplating are covered in IS0 4642.

If different electroplating requirements are desired or if requirements are needed for other finishes, they should be agreed between customer and supplier.

Limits for surface discontinuities are covered in IS0 6157-1 and IS0 6157-3.

For acceptance procedure, see IS0 3269.

1) The designation symbols for the property classes according to IS0 898-l can also be used for threads above M39, provided that the finished product has all the properties assigned to the designation symbols in IS0 8981.

2) WhfUtever is shorter.

5 Designation

Example for the designation of a hexagon head screw with thread size M12, nominal length I = 80 mm and property class 8.8:

Hexagon head screw IS0 4017 - Ml2 x 80 - 8.8

8

( Continued from second cover )

In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist:The corresponding Indian Standards which are to be substitited in their place are listed below along with their degree of equivalence for the editions indicated:

international Corresponding Indian Standard Degree of Standard Equivalence

IS0 225 Identical IS 8535 : 1987 Bolts, screws, nuts and accessories - Terminology and nomenclature ( first revision )

1s 4218 ( Part 2) : 1976 IS0 metric screw threads: Part 2 Diameter pitch combinations ( first revision )

IS 4206 : 1987 Dimensions for nominal leng?hs and thread lengths for bolts, screws and studs ( first revision )

IS 1367 ( Part 3 ) : 1991 Technical supply conditions for threaded steel fasteners : Part 3 Mechanical properties and methods for bolts, screwsand studs with full loadability

IS 4218 ( Part 6 ) : 1978 IS0 metric screw threads : Part 6 Limits of sizes for commerdial bolts and nuts ( diameter range 1 to 52 mm ) ( first revision )

IS 1367 ( Part 17 ) : Technical supply conditions for threaded steel fasteners : Part 17 Acceptance criteria ( under preparation )

IS 1367 ( Part 14 ). : 1989 Technical supply conditions for threaded steel, fasteners : Part 14 Stainless steel threaded fasteners ( second revision )

IS 1369 ( Part 1 ) : Threaded runouts and undercuts: Part 1 Dimensions for screw thread runouts for external IS0 metric threads ( third revision of IS 1369 ) ( under peparation )

IS 1367 ( Part 11 ) : Technical supply conditions for threaded steel fasteners : Part 11 Electroplated’ coatings on threaded steel fasteners ( under preparation )

IS0 261

IS0 888

IS0 898-l

IS0 965-2

IS0 3269

IS0 3506

IS0 3508

IS0 4042

IS0 4753

IS0 4759-l

IS0 6157-1

IS0 6157-3

IS0 8839

IS0 8992

ALTERATION

IS 1368 : 1987 Dimensions for ends of parts with external IS0 metric threads ( third revision )

IS 1367 ( Part 2 ) : 1979 Technical supply conditions for threaded steel fasteners : Part 2 Product grades and tolerances ( second reviston )

IS 1367 ( Part S/Set 1 ) : Technical supply conditions f& threaded steel fasteners : Part 9 Surface discontlnuities on bolts, screws and studs, Section 1 General requirements ( under preparation )

IS 1367 ( Part S/Set 2 ) : Technical supply conditions for threaded steel fasteners : Part 9 Surface discontinuities on bolts, screws and studs, Section 2 Special requirements ( under preparation )

IS . . . . ..Mechanical properties of fasteners-Bolts, screws, studs and nuts made of non-ferrous metals ( under preparatron )

IS 1367 ( Part 1 ) : 1980 TechCcal supply conditions far threaded steel fasteners: Part 1 Introduction and general information ( second revision )

Technically equivalent

Identical

Identical

Technically equivalent

Technically equivalent

Technically equivalent

Identical

Technically equivalent

Identical

Technically equivalent

Identical

Identical

Identical

Equivalent

In clause 5, the designation of hexagon head screw may be read as ‘Hexagon head screws IS 1364 ( Part 2 )-IS0 4017-Ml2 x 80-8’8 in place of ‘Hexagon head screws IS0 4017- Ml2 x 80-8’8’.

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the activities of standardizatim, marking and quality certification of goods and attending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright 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 reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of ‘BIS Handbook’ and ‘Standards Monthly Additions’.

This Indian Standard has been developed from Dot: No. LM 14 ( 0163 ) 1

Amend No.

Amendments Issued Since Publication

Date of Issue Text Affected

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