Must Have 3/8″-120 Degree 6 Flute Chatterless Countersink HSS 1/4″ Round Shank DEWCHAT3/8-120

Industrial-grade countersink tool designed for precision metalworking and aerospace applications. The 3/8 inch diameter countersink features a 120 degree included angle, 6 flutes, and a round 1/4 inch shank for compatibility with CNC and manual machine tool holders.

Specs

Diameter: 3/8 inch

Included angle: 120 degrees

Flutes: 6

Shank diameter: 1/4 inch

Shank type: Round

Material: High Speed Steel (HSS)

Features

Chatterless design reduces vibration during countersinking for cleaner edge profiles and longer tool life on hardened steel, aluminum, and alloys.

Six-flute geometry improves chip evacuation and surface finish in metalworking applications requiring controlled breakout.

Round shank ensures compatibility with collet chucks and drill press spindles.

Countersink seating accuracy supports flush screw heads and precise assembly in production environments.

Industrial-grade construction maintains tight tolerances for repeatable performance in high-volume machining.