This standard specifies the types and basic dimensions of the rectangular shank of the keyway broach, the cylindrical front shank and the rear shank of the inner broach. This standard applies to: a) Rectangular shanks of keyway broaches with a shank width of 4 mm to 45 mm; b) Cylindrical front shanks of internal broaches with a shank diameter of 4 mm to 100 mm; c) Internal broaches with a shank diameter of 12 mm to 100 mm The cylindrical rear handle of the knife.