G14220.5 Countersink with extra radial relief - 90°

Countersink with 3-flutes, 90° chamfering angle, maximum diameter 20.50mm with an overall length of 63mm and a head length of 13mm and 10mm straight shank, according to DIN 335 C standard to produce a conical seat for ISO Metric countersunk-head screws with a minium hole diameter of 3.50mm, HSS with standard bright finish for machining free machining, plain carbon and alloy steel, ferritic stainless steel, wrought and copper or copper alloys and polymers