Drill America
Drill America 1/2in x 12in HSS Aircraft Extension Drill Bit pneumatic accessory
1/2-inch HSS aircraft extension drill bit reaches 12 inches overall length with 4-1/2-inch flute for deep-hole drilling
- TypeDrill Accessories
- 12-inch reach for deep-hole drilling
- High-speed steel construction resists wear
- 5000-inch diameter matches 1/2-inch chucks
- 4-1/2-inch flute clears chips efficiently
1/2in HSS Aircraft Extension Drill Bit
The Drill America 1/2in x 12in HSS Aircraft Extension Drill Bit is a high-speed steel accessory designed for deep-hole drilling in metal fabrication and maintenance tasks. Its 12-inch overall length and 4-1/2-inch flute length suit operators who need extended reach in confined workspaces. The surface-treated finish supports durability during repetitive use.
Installation and common issues
The straight shank fits standard 1/2in drill chucks without adapters, allowing quick changeover on pneumatic or electric drills. Users should verify chuck capacity matches the 1/2in shank to avoid slippage under load. The long flute can collect chips in deep cuts, so periodic withdrawal helps prevent binding and overheating.
Highlights
- 12-inch reach for deep-hole drilling
- High-speed steel construction resists wear
- 5000-inch diameter matches 1/2-inch chucks
- 4-1/2-inch flute clears chips efficiently
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill Accessories |
Questions about this item
How can I confirm the drill bit is cutting correctly after I chuck it into my drill?
The bit should produce a clean, round hole at the .5000 decimal size with steady chip evacuation through the 4-1/2 inch flutes; any wobble or rough edges indicate run-out or dullness.
What comes with the drill bit and do I need to purchase a chuck or pilot drill separately?
The package contains only the 1/2 inch by 12 inch HSS aircraft extension drill bit; a compatible 1/2 inch capacity drill chuck is required and is not included.
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