9/32″ X 3/32″ Aircraft Counterbore HSS 1/4″ Round Shank 4 Flute DEWA/CCBR9/32 Reduced Price

Industrial counterbore milling tool optimized for aerospace-grade bolt-hole seating and high-precision pocketing on aluminum and alloy steels. The cutter features 9/32 inch diameter, 3/32 inch counterbore depth, a 1/4 inch round shank, 4 flutes, and High-Speed Steel construction for demanding machining applications.

Specs

Diameter: 9/32 inch

Counterbore depth: 3/32 inch

Shank: Round, 1/4 inch

Flutes: 4

Material (grade): HSS

Features

Application: Counterboring bolt holes in aluminum alloys and structural steels for aerospace and industrial components.

Geometry: 4-flute configuration enables efficient material removal, reliable chip evacuation, and smoother bore finishes.

Shank compatibility: 1/4 inch round shank fits standard CNC collets and end mill holders, facilitating quick tool changes.

Material properties: High-Speed Steel provides heat resistance, edge retention, and re-sharpening capability for extended tooling life in repetitive cycles.