4 X 2-1/8″ Combined Drill Bit and Countersink 5/16″ Round Shank Carbide DMOCCD4-60 Exclusive Offer

Professional-grade combined drill bit and countersink designed for precision drilling and countersinking in metalworking and fabrication environments. Carbide construction with a round shank provides compatibility with standard chucks and tool holders for reliable performance.

Specs

Dimensions: Drill diameter #4; Overall length 2-1/8 inch; Shank diameter 5/16 inch

Drive type: Round shank

Material: Carbide

Features

Single-pass operation: Drills and countersinks in one motion, reducing cycle time and setup complexity.

Carbide construction: High hardness and wear resistance for extended tool life in hard metals and alloys.

Shank compatibility: 5/16 inch round shank fits standard toolholders, collets, and chucks.

Hole quality: Maintains concentricity between drilled hole and countersunk feature for flush fastener seating.

Industrial applicability: Suitable for metal fabrication, automotive assembly, equipment maintenance, and aerospace manufacturing workflows.