IS 8535 : 2020/ISO 1891 : 2009 Fasteners-Terminology

Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Second Revision) which is identical with ISO 1891 : 2009 ‘Fasteners — Terminology’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the General Engineering and Fasteners Standards Sectional Committee and approval of the Production and General Engineering Division Council.

The original version of this standard, IS 8535 : 1977 ‘Terminology for features of fasteners’ was based on lSO/DlS 1891-2 ’Fasteners — Bolts, screws, nuts and accessories — Terminology and nomenclature’ issued by the ISO. The nomenclature and terminology of fasteners was also covered in another standard IS 8537 : 1977 ‘Nomenclature and terminology of fasteners’ which was also based on ISO/DIS 1891-2. The first revision covered the nomenclature and terminology which was so far covered in the two separate Indian Standards IS 8535 : 1977 and IS 8537 : 1977. IS 8537 : 1977 was withdrawn consequent to publication of this standard. The first revision was the adoption of ISO 1891 : 1979. The second revision of this standard has been undertaken to align it with the latest version of ISO 1891 : 2009.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviation. Certain terminologies and conventions are, however, not identical to those used in the Indian Standards. Attention is particularly drawn to the following:

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

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