OEM APPROVED VENDOR 421551 Carbide Threaded-Shank Three-Flute Countersink

The APPROVED VENDOR 421551 is a 100° three-flute countersink used to create a conical recess for flat-head screws in metalworking. Its carbide construction suits hard materials, and the 1/4"-28 threaded shank allows secure mounting in toolholders for precision deburring and chamfering.

The APPROVED VENDOR 421551 countersink has a 7/16 in body diameter, 1/4"-28 shank thread size, three flutes, and a 100° included angle. It is made of carbide and is identified by manufacturer part number 421551. This threaded-shank design provides stable, repeatable countersinking in production environments.

3G Electric supplies the APPROVED VENDOR 421551 countersink worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this carbide three-flute countersink to your facility. Contact us for availability and lead time on this threaded-shank tool.

To select a countersink for a 1/4"-28 threaded shank, match the shank thread size exactly to your toolholder. The APPROVED VENDOR 421551 offers a 7/16 in body diameter and 100° angle, ideal for flat-head screws. Ensure the flute count (three) matches your material and finish requirements for chip evacuation.