Drill America cobalt drill bit 31/64" set (6-pack) DWDCO
Cobalt drill bits designed for harder metals with a thin gold oxide surface. Round shanks for versatile toolholding. Customers note durability and sharpness through galvanized steel and high carbon aluminum projects
Highlights
- cobalt for hard metals
- gold oxide surface
- aerospace standard 907
Pros
- Cobalt steel with improved performance on hard metals
- Thin oxide surface aids cutting
- Round shanks for versatile toolholding
- Effective chip evacuation in counterclockwise direction
- Manufactured to aerospace standard 907
Cons
- Size accuracy concerns reported by some customers
- Mixed opinions on suitability for certain materials
Best For
Features
- Cobalt steel adds strength for cutting harder metals like stainless steel or nickel alloys
- Gold oxide surface is a thinner oxide treatment compared to black oxide
- Round shanks compatible with a wide range of toolholding systems
- Right-hand cut spiral flutes evacuate chips to reduce clogging during cutting
- Manufactured to National Aerospace standard 907
