39/64″ X 3/16″ Straight Shank Counterbore HSS 1/2″ Round Shank 3 Flute DEWCBR39/64 Hot Picks

Industrial-grade counterbore tooling designed for precision hole finishing in metalworking environments. Dual shank configurations provide compatibility with a range of holder systems used on CNC mills, lathes, and drill press setups.

Specs

Dimensions: 39/64″ x 3/16″

Shank options: Straight Shank; Round Shank (1/2″ Round Shank)

Material Grade: HSS

Features

3 Flute: Cutting geometry optimized for efficient chip evacuation and consistent bore quality during counterboring operations.

Material: High-Speed Steel (HSS) for wear resistance and elevated temperature tolerance in metalworking environments.

Applications: Suitable for counterboring holes to seat fasteners in steel, aluminum, and other metals when used with appropriate spindle speed and feed rates.

Shank compatibility: Supports multiple tool-holding systems with Straight Shank and Round Shank configurations; Round Shank specified as 1/2″ diameter for compatible chucks and holders.