was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 12, Fasteners with metric internal thread.
This fourth edition cancels and replaces the third edition (ISO 4032:1999, corrected and reprinted 2001), of which it constitutes a minor revision.

The ISO 4032 range is M1. 6 to M64, cutting out diameters below M1. 6 and over M64 that existed in the DIN 934 standard. The height of the nuts are the same up to M4, then
begin to differ with the height of the ISO 4032 hex nuts actually being slightly taller than the DIN 934 hex nuts

to access standard ISO 4032 click here