Description
Counterbore with 3-flutes, diameter 6.50mm with an overall length of 71mm and a flute length of 14mm and 5mm straight shank, according to DIN 373 standard to produce a counterbore with the aid of a non-drilling pilot with a diameter of 3.40mm for normal fit clearance for M3, HSS with standard bright finish for machining free machining and plain carbon steel, wrought and copper or copper alloys
