49/64″ Reduced Shank Drill Bit Cobalt 1/2″ Reduced Shank D/ACO49/64 Top Pick

Specs

Diameter: 49/64″ (0.7656″)

Shank: 1/2″ Reduced

Material: Cobalt steel alloy

Quantity: 1 piece

Designation: D/ACO

Features

Cobalt alloy provides increased wear resistance and heat tolerance for drilling through hard metals such as stainless steel and alloy steels.

Bold flute geometry maintains cutting edge integrity under high-speed metal drilling, helping to reduce bit chipping in tough materials.

Shank type: 1/2″ reduced diameter for compatibility with tools supporting that shank size.

Ideal use cases: drilling hard metals including stainless steel and alloy steels, as part of metal fabrication, maintenance, and precision machining workflows.

Performance context: offers extended tool life and reliable performance under elevated temperatures compared with standard high-speed steel bits when drilling hard alloys.

Physical

Shank: 1/2″ reduced

Bit diameter: 49/64″ (0.7656″)

Construction: cobalt steel alloy for extended tool life in high-temperature drilling