Drill America 39/64 in Cobalt Heavy Duty Split Point Stub Drill Bit pneumatic accessory

Cobalt Heavy Duty Split Point Stub Drill Bit

The Drill America cobalt stub drill bit is manufactured to Aerospace Standard 907 for professional use. Its short, rugged construction performs well in a broad range of iron and steel materials. The 135 degree split point is self-centering and reduces thrust during drilling. This design suits portable or machine drilling where spindle clearance is limited.

Aerospace Standard 907 manufacturing

Compliance with Aerospace Standard 907 ensures the bit meets rigorous dimensional and material requirements for demanding applications. The 135 degree split point eliminates the need for centre punching and lowers the feed pressure required. Short flute length increases rigidity and reduces breakage in confined setups. Sizes smaller than 1/16 inch and larger than 1/2 inch use a 118 degree standard point instead.

California Proposition 65 chemical warning

This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. Verify that your chuck accommodates a 39/64 inch shank before ordering. Confirm the 135 degree point angle matches the material hardness and drilling method you intend to use. The stub length requires adequate workpiece clamping to prevent vibration.