| Slot depth, width of contact (radial) Depth of cut (axial) Feed per revolution Feed per tooth (Cutting edge) Cutting speed Maximum cutting speed for unbalanced tools Feed rate Revolutions per minute (RPM) Effective No. (Qty.) of teeth Average chip thickness Tightening torque of clamping screw Drive power (estimated) Material Groups 1 2 Unalloyed Steel and Cast Steel 3 4 Low Alloy 5 Steel A 6 and Cast Steel 7 High Alloy 8 Steel and Cast Steel |