Drill America
Drill America 21/32in HSS Reduced Shank Drill Bit x 3/8in Shank pneumatic accessory
High-speed steel drill bit with 21/32 inch diameter and reduced 3/8 inch shank for larger holes
- TypeDrill Accessories
- 21/32 inch drilling capacity from high-speed steel construction
- 3/8 inch reduced shank fits standard drill chucks
- Surface-treated flutes improve chip removal during use
- 6 inch overall length provides extended reach for deep holes
21/32" HSS Reduced Shank Drill Bit
This 21/32" high-speed steel drill bit features a reduced 3/8" shank for compatibility with standard chucks. It is designed for drilling large-diameter holes in metal, wood and plastic using a portable drill or drill press. The surface-treated flutes promote chip evacuation and reduce friction during operation. Suitable for maintenance, fabrication and general workshop tasks requiring a 0.6563" hole size.
Installation notes and common issues
The bit installs directly into any 3/8" or larger drill chuck without adapters. Ensure the shank is fully seated and tightened securely to prevent slippage under load. A common issue is applying excessive feed pressure, which can cause the bit to bind or overheat, especially in harder materials. Using cutting fluid and a steady, moderate feed rate helps maintain cutting efficiency and extends tool life.
Highlights
- 21/32 inch drilling capacity from high-speed steel construction
- 3/8 inch reduced shank fits standard drill chucks
- Surface-treated flutes improve chip removal during use
- 6 inch overall length provides extended reach for deep holes
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill Accessories |
Questions about this item
How can I confirm the 21/32in drill bit is cutting correctly after chucking it in my 3/8in drill?
The bit should enter the workpiece smoothly with steady pressure and produce continuous, silvery chips rather than fine dust or burnt edges, indicating the HSS flutes are clearing efficiently.
What comes in the package and is a 3/8in chuck adapter required separately?
The box contains the single 21/32in silver-and-deming drill bit with its integral 3/8in reduced shank; no separate adapter is needed because the shank fits directly into any standard 3/8in drill chuck.
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