ISO International Standard

ISO 10071-1:2008 specifies interchangeability dimensions and tolerances, in millimetres, for ball-lock punches for light duty.

It is applicable to ball-lock punches with shank diameter sizes from 6 mm up to and including 32 mm, in round, square, rectangular and oblong shapes, for punching holes in steel sheets or other materials, the thickness of which is less than 3 mm.

ISO 10071-1:2008 also gives examples related to materials and hardness, and specifies the designation of ball-lock punches for light duty.