Description
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
Can We Help?
If you’re not sure that this product is right for you, give us a call!
800-222-0324

