Description
Interchangeable pilot type counterbore body with 4-flutes, diameter 9/16″ with an overall length of 4.1/4″ and a flute length of 5/8″ and 1/2″ 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 1/8″ and a maximum pilot guide diameter of 1/2″, HSS with standard bright finish for machining free machining and plain carbon steel, wrought and copper or copper alloys
