ISO/CD 21937

ISO general purpose metric screw threads --- Limits of sizes ISO/CD 21937

Scope

This document specifies the limits of sizes for the major, pitch and minor diameters of ISO general purpose metric screw threads (M) conforming to ISO 261 having basic and design profiles in accordance with ISO 68-1.
This document is applicable to the metric fastening screw threads with the ten recommended tolerance classes specified by ISO 965-1.