Drill spiral with a cylindrical shaft for processing of aluminum STs0397A alloys

Drills spiral with c / hv for processing of light alloys are made on TU 3912.001.00223131 - 96 and are intended for drilling of openings in aluminum, aluminum deformable and foundry alloys, in copper and its alloys, in zinc and magnesian alloys on the universal equipment, special machines, machines with ChPU and automatic transfer lines. A class of accuracy of drills - And. Drills for processing of light alloys differ in a corner at top (the 140th hail. ) and tilt angle of the screw line (40th hail. ), and also existence of a subpoint of a crossing point. Material - P6M5 quick cutting steel.