Counterbore for manufacture of countersinking according to DIN 74, Page 2, Form H, J and K for socket head cap screws, hexagonal screw heads and nuts. Ideal for burr-free and zero chatter countersinking. Best results at low cutting speed.
Quality:
HSS-G:
Use for steel, cast steel alloys and non-alloys, grey, malleable, ductile and cast iron, sintered iron, nickel silver, graphite, short cutting aluminium alloys, brass, bronze and plastics