ISO 8020规定了圆柱头、直柄或缩径柄冲头的基本尺寸和公差，单位为毫米。 带缩径柄的圆柱头冲头标准化为圆形、长方形、方形和矩形。 本国际标准给出了材料及其硬度的示例，并根据本国际标准规定了冲头的名称。 这些冲头的柄直径从3毫米到32毫米不等。 ISO 8020中规定的冲头主要用于在钢板上打孔。它们也可用于冲压其他材料。

ISO 8020 specifies the basic dimensions and tolerances, in millimetres, of punches with cylindrical head and straight or reduced shank. Cylindrical head punches with reduced shank are standardized in round, oblong, square and rectangular shapes. This International Standard gives examples of materials and their hardness and specifies the designation of punches in accordance with this International Standard. These punches are available with shank diameters from 3 mm to 32 mm. The main use of the punches specified in ISO 8020 is for punching holes in steel sheet. They may also be used for punching in other materials.