55707

Countersink, 60 Degrees , 1 in, Carbide, Bright (Uncoated) Solid carbide countersinks provide excellent wear resistance when machining the toughest materials, such as cast iron and stainless steel. Single-flute countersinks are suitable for use at high speeds. They leave clean edges on holes and have a high, positive rake that reduces vibration as they expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece.Countersinks expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. This helps prevent the workpiece material from swelling when a screw is installed in the hole and tightened down in metalworking applications. Countersinks can also be used to debur holes for a smooth.