High Speed Steel Bright Fractional Machine Countersink
Four Flute Machine Countersinks have a longer shank to use in Turret lathes and for screw machine work.
Features:
most common angles for countersinking available; 60°, 82°, 90°
4 flutes for imrpoved removal rate and surface finish
longer shank for use in turret lathes
Applications:
Deburring edges of holes
Cutting a chamfer for a hole
Countersinking a hole for screw head clearances