1/2″-90 Degree 3 Flute Countersink HSS 3/8″ Round Shank DEWCSK1/2-90 Seasonal Sale

Industrial countersinking tooling for precision hole preparation in metalworking and fabrication. This 1/2″ diameter, 90° countersink features a 3/8″ round shank and High Speed Steel construction for demanding applications.

Specs

Diameter: 1/2″

Angle: 90°

Flutes: 3

Shank: 3/8″ Round

Material: HSS (High Speed Steel)

Features

Three-flute geometry enables efficient chip evacuation and smooth hole finishing during countersinking operations.

Countersink angle is 90° to create standard flush seating for common fasteners and reduce seating variance.

Round shank design 3/8″ provides reliable retention and compatibility with standard drill chucks and holders.

Material is HSS, delivering superior wear resistance and hot hardness for repeated countersinking cycles in metalworking.

Applications include screw-seat preparation and hole chamfering for machine components, fixtures, and enclosures in industrial environments.

Surface interaction supports clean edge conditioning and burr reduction at the entry of countersunk holes.