5/16″ Jobber Length Drill Bit Cobalt D/ACO5/16 (12 / Pkg.) Seasonal Sale

The [12 PKG] 5/16″ Cobalt Jobber Length Drill Bit, D/ACO Series is a cobalt alloy drill bit designed for demanding metalworking tasks. This 12-piece set delivers durable, consistent performance across hard metals and fabrication projects.

Specs

Diameter: 5/16 in

Length: Jobber length

Material: Cobalt alloy

Series: D/ACO

Package: 12 pieces

Features

Cobalt alloy construction provides superior hot hardness and wear resistance for drilling hard metals such as stainless steel and alloy steel.

Jobber-length design offers extended reach for mid-depth holes and versatile metalworking tasks.

Designed to maintain cutting edge under elevated drilling temperatures, reducing premature dulling and maintaining hole size.

Bundled as a 12-piece pack for ongoing machining and fabrication workflows.

Ideal for shop environments requiring durable tooling for repeated, demanding use in metalworking, automotive maintenance, and fabrication projects.

Physical

Diameter: 5/16 in

Length: Jobber length

Material: Cobalt alloy

Series: D/ACO

Packaging: 12 pieces per package