Drill America 63/64in Cobalt Heavy Duty Split Point Stub Drill Bit pneumatic accessory

63/64in Cobalt Stub Drill Bit

This cobalt heavy-duty stub drill bit is built for portable or machine drilling in iron and steel families. It meets Aerospace Standard 907 for screw machine applications where spindle clearance is limited. Automotive and construction professionals use it for short, rigid drilling tasks.

135-degree split point and size limits

The 135-degree split point is self-centering and reduces thrust for easier starts in tough alloys. Sizes smaller than 1/16in and larger than 1/2in revert to a 118-degree standard point, so this bit uses the split-point geometry. It handles short-run production and maintenance drilling where stub length is required.

Cobalt construction and Proposition 65 notice

Cobalt alloy construction provides the hardness and heat resistance needed for repeated drilling in steel. The product carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm. The rugged, compact design suits screw machine setups and tight-access work.