TECHNICAL SUPPLY CONDITIONS FOR THREADED STEEL FASTENERS
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NATIONAL FOREWORD
This Indian Standard ( Part 1 ) ( Third Revision ) which is identical with ISO 8992:1986 ‘Fasteners —
General requirements for bolts, screws, studs and nuts’ issued by the International Organization for
Standardization ( ISO ) was adopted by the Bureau of Indian Standards on the recommendation of the
Bolts, Nuts and Fasteners Accessories Sectional Committee and approval of the Basic and Production
Engineering Division Council.
This standard was originally published in 1961 and subsequently revised in 1967 and 1980. This
revision of the standard has been taken up to align it with ISO 8992 : 1986 by adoption under dual
numbering system.


1 Scope and field of application
This International Standard specifies the general requirements
for standardized bolts, screws, studs and nuts; it complements
the International Standards on dimensional and tolerance
requirements, and the International Standards on mechanical
and functional requiretwnts.
It is recommended that this International Standard be usad also
for non-standardized bolts, screws, studs and nuts.


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 standardization, 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 maybe 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 (Publications), 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 Catalogue’ and ‘Standards : Monthly Additions’.