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Countersink,90 deg.,3/8" Body

C46206 Grainger Part #:445R72 High-speed steel countersinks offer good wear resistance in a wide range of countersinking applications. purpose 4-flute countersinks expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. Four-flute countersinks typically provide more wear resistance than countersinks with fewer flutes.

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 finish. Countersink, 90 Degrees , 3/8 in, High Speed Steel, Black Oxide