ISO 724:1993(en) is ISO general purpose metric screw threads Basic dimensions. specifies the basic dimensions, in millimetres, of ISO metric screw threads in accordance with ISO 261. The values refer to the basic profile in accordance with ISO 68.
Normative references as follows:
ISO 68:—1), ISO general-purpose screw threads — Basic profile.
ISO 261:—2), ISO general-purpose metric screw threads — General plan.
ISO 5408:1983, Cylindrical screw threads — Vocabulary.