Drill America
Drill America 55/64in HSS Reduced Shank Drill Bit
High-speed steel drill bit with a reduced 1/2-inch shank and three-flatted grip for 55/64-inch holes
- TypeDrill Accessories
- 55/64 inch drill size handles large holes efficiently
- High-speed steel construction resists heat during extended drilling
- 1/2 inch reduced shank fits standard drill chucks securely
- Three-flatted shank design prevents slippage under high torque
55/64in HSS Reduced Shank Drill Bit
This 55/64in high-speed steel drill bit features a reduced shank with three flatted surfaces for secure chuck grip. The Silver and Deming style bit has a flute length of 3in and an overall length of 6in. It is designed for general-purpose drilling in metal, wood and plastic where a 1/2in chuck capacity is the limit.
Upgrading from smaller shank bits
The reduced shank allows this large 55/64in diameter bit to be used in a standard 1/2in drill chuck, replacing the need for a larger machine. The jump is worth it when a single hole of this specific decimal size .8594 is required and the workpiece material suits high-speed steel.
Highlights
- 55/64 inch drill size handles large holes efficiently
- High-speed steel construction resists heat during extended drilling
- 1/2 inch reduced shank fits standard drill chucks securely
- Three-flatted shank design prevents slippage under high torque
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill Accessories |
Questions about this item
Will the 1/2 reduced shank fit my drill chuck?
The 1/2 reduced shank fits any chuck that accepts a 1/2 diameter shank, while the 55/64 cutting diameter handles the larger hole.
What is the correct way to tighten the three-flatted shank?
Align each flat with a chuck jaw and tighten evenly so all three flats seat fully; skipping one flat lets the bit slip under load.
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