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Tools for pressing. Round punches with 60° conical head and reduced shank
This International Standard specifies the dimensions and tolerances, in millimetres, for round punches with a 60° conical head and reduced shank, having shank diameters D1 of 2 mm or 3 mm.
It gives examples of materials and hardness, and specifies the designation of punches which meet the requirements of this International Standard.
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.
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