Drill America
Drill America 21/64 in 6 in HSS Aircraft Extension Drill Bit pneumatic accessory
A 21/64 inch high-speed steel aircraft extension drill bit with a 6 inch overall length for deep-hole drilling
- TypeDrill Accessories
- Precise 21/64 inch diameter for accurate holes
- 6 inch overall length reaches deep work areas
- High-speed steel construction resists heat and wear
- 3-5/16 inch flute length clears chips efficiently
Drill America 21/64in Aircraft Extension Bit
This 21/64in HSS aircraft extension drill bit from Drill America is built for deep-hole drilling in metal and wood. Its 6in overall length and 3-5/16in flute length reach areas standard bits cannot. The high-speed steel construction handles repetitive use in maintenance and fabrication shops. It suits mechanics and machinists who need accurate, extended reach.
Fits standard chucks for extended reach drilling
The straight shank fits standard drill chucks without special adapters. The 6in overall length frees up access in deep cavities or through thick workpieces where shorter bits bottom out. The 3-5/16in flute clears chips efficiently over the longer travel. It is not for buyers who need larger diameters or shorter bits for tight spaces.
Highlights
- Precise 21/64 inch diameter for accurate holes
- 6 inch overall length reaches deep work areas
- High-speed steel construction resists heat and wear
- 3-5/16 inch flute length clears chips efficiently
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill Accessories |
Questions about this item
How deep can the 21/64 inch bit drill before the 3-5/16 inch flute length limits chip clearance?
The flute length is 3-5/16 inches, so effective drilling depth is limited to that distance before chips pack the flutes and stall the bit.
Does the high-speed steel hold up to heat during extended pneumatic drilling sessions?
High-speed steel resists heat buildup well, but continuous pneumatic use will still warm the bit; allow cooling breaks to maintain hardness and edge life.
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