1-1/4″ X 3/8″ Straight Shank Counterbore HSS 1″ Round Shank 5 Flute DEWCBR1-1/4 Bargain

Industrial counterbore tooling for metalworking and fabrication applications. This listing specifies a 1-1/4 inch diameter counterbore cutter with a straight shank of 3/8 inch diameter and an alternative 1 inch round shank, manufactured from HSS (High-speed Steel) and featuring a 5 flute geometry.

Specs

Diameter: 1-1/4 inch

Shank configuration: Straight Shank (diameter 3/8 inch); Alternative Round Shank (diameter 1 inch)

Flute count: 5

Material: HSS

Features

Five-flute geometry: Designed for efficient material removal and consistent chip flow in metalworking operations.

Material: HSS (High-speed Steel): High-temperature resistance and durability in steel, cast iron, and aluminum alloys.

Counterbore geometry: Creates a flat-bottom recess compatible with socket head cap screws, enabling flush fasteners in machinery assemblies.

Shank compatibility: Supports common toolholding configurations with both straight and round shank interfaces, reducing setup changes in multi-tool environments.

Applications: Suitable for through-hole counterboring in structural components, machine frames, housings, and fabrication assemblies.