23/64″ X 3/32″ Straight Shank Counterbore HSS 5/16″ Round Shank 3 Flute DEWCBR23/64 Best Seller

Industrial counterbore tooling for precision bolt head seating in metalworking environments.

This 3-flute High-Speed Steel tool is offered with Straight Shank and Round Shank configurations, including Round Shank diameter 5/16 inch, to support a wide range of machine spindles.

Specs

Dimensions: 23/64 inch x 3/32 inch

Shank options: Straight Shank; Round Shank, 5/16 inch diameter

Flute count: 3 Flute

Material: High-Speed Steel (HSS)

Features

3-flute design enables efficient chip removal and stable cutting action during counterboring operations.

High-Speed Steel construction provides heat resistance and wear resistance suitable for repeated counterboring in metalworking environments.

Shank versatility supports integration with standard drill chucks and collet-based toolholding systems; Straight Shank for traditional setups, Round Shank for reduced runout in compatible machines.

Application: Used to establish a recessed seating area for fasteners, ensuring flush bolt head alignment and improved load distribution in through holes and selected blind hole scenarios.