This Korean Industrial Standard specifies the counterbores for hexagon socket head bolts used for the working of counterbores Corresponding to hexagon socket head bolts with thread designations M3 to M27 specified in KS B 1003 (hereinafter referred to as milling cutters).
Remarks 1. Among the items specified in this Standard, the Morse taper numbers and the shapes and dimensions (excepting the overall lengths of type 2) coincide with those specified in ISO 4206 and ISO 4207.
2. Normative references to this Standard shall be Attached Table.