Revised Standard from Last Update.

1. SCOPE

This standard covers the tolerances on wrench (spanner) and socket openings for screws and nuts (or similar parts) having metric widths across flats dimensions. It gives, for each dimension, the tolerances for general use, defined by its two deviations, minimum and maximum, with respect to the nominal value. These deviations have been determined in relation to the width across flats tolerances for screws and nuts specified in IS 1367 (Part 2) and with regard to the manufacture of tightening tools.

2. REFERENCES

The standards listed below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below.

IS 1367 (Part 2) : 2002 Technical supply conditions for threaded steel fasteners : Part 2 Tolerances of fastners - Bolts, screws, studs and nuts (third revision)