This standard BS 3643-1:2007 ISO metric screw threads is classified in these ICS categories:
21.040.10 Metric screw threads
This part of BS 3643 gives a compilation of principles and basic data for single-start, parallel screw threads having the ISO basic profile for triangular screw threads. Guidance on calculating limits of size for metric screw threads not included in Tables 1 to 14 is given in Annex B.
