DWDCO cobalt reduced-shank drill bit, 1/2 in shank
Cobalt drill bit with 1/2" round shank for versatile tooling. Improves performance when cutting harder metals; round shank supports varied toolholding. Some users report brittleness and wobble in use
Highlights
- cobalt for high-temp durability
- round shank compatibility
- aerospace-standard manufacture
Pros
- cobalt steel tool performance
- round shank for versatile toolholding
- suitable for harder metals
- gold oxide surface treatment for wear resistance
- complies with aerospace standard 907
Cons
- mixed feedback on cutting accuracy and dullness
- reports of brittleness
- bit can wobble during use
Best For
Features
- Cobalt steel tools are similar to high-speed steel
- but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- Manufactured to National Aerospace standard 907.
