Drill America
Drill America D/ACO51/64 51/64" pneumatic accessory
51/64 inch cobalt drill bit with 1/2 inch reduced shank for drilling large holes in tough metals
- TypeDrill Accessories
- 51/64" cobalt bit drills hard metals
- Reduced 1/2" shank fits standard chucks
- Bronze oxide finish resists wear
- 3" flute length clears chips efficiently
Drill America 51/64" Cobalt Silver and Deming Bit
This new Drill America D/ACO51/64 is a 51/64 inch cobalt steel drill bit with a 1/2 inch reduced shank. It features bronze oxide surface treated flutes for wear resistance. The decimal equivalent is .7969 with a 3 inch flute length and 6 inch overall length.
Best for Large Hole Drilling in Metal
Suited for machinists and maintenance technicians drilling 51/64 inch holes in tough alloys using a 1/2 inch chuck. Not for users needing smaller diameters, larger shank sizes, or bits without reduced shank design.
Highlights
- 51/64" cobalt bit drills hard metals
- Reduced 1/2" shank fits standard chucks
- Bronze oxide finish resists wear
- 3" flute length clears chips efficiently
Specifications
| Brand | Drill America |
|---|---|
| Model | D/ACO51/64 |
| Type | Drill Accessories |
Questions about this item
Will this 51/64" drill bit fit my 1/2" drill chuck?
Yes, the reduced shank is sized for a 1/2" chuck so the bit mounts directly without an adapter.
Can I use this cobalt bit in my older pneumatic drill motor?
The 1/2" reduced shank fits standard pneumatic drill chucks, and the cobalt steel construction handles the higher torque of older motors.
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