This International Standard lays down the dimensions and tolerances in millimetres for basic cylindrical head punches with reduced shank; it also includes shapes.
It gives materials and hardness as examples, and specifies the designation of punches according to this International Standard.
Cylindrical head punches with reduced shank are standardized in round, oblong, square and rectangular shapes.
They are available in 5 to 32 mm shank diameter sizes.
The main use of punches defined in this International Standard is for punching holes in steel sheet. They may also be used for punching holes in other materials.