Description
Interchangeable pilot type counterbore body with 4-flutes, diameter 5/16″ with an overall length of 4″ and a flute length of 1/2″ and 19/64″ reduced straight shank, according to ANSI standard to produce a flat bottom seat for socket-head cap screws with the aid of a detachable pilot with a mounting diameter of 3/32″ and a maximum pilot guide diameter of 1/4″, HSS with standard bright finish for machining free machining and plain carbon steel, wrought and copper or copper alloys
