ISO 724:1993 Preview
ISO general-purpose metric screw threads -- Basic dimensions
This standard was last reviewed and confirmed in 2014. Therefore this version remains current.
Specifies the basic dimensions of metric threads in accordance with ISO 261. The basic dimensions are: basic major diameter of internal or external thread (nominal diameter), basic pitch diameter of internal or external thread, basic minor diameter of internal or external thread, height of fundamental triangle, pitch. The values refer to the basic profile in accordance with ISO 68.