Chicago-Latrobe
Chicago-Latrobe 11014 135 Degree NAS-Type Aircraft Extension Drill 17/64 in
135-degree split-point high-speed steel extension drill with black oxide finish reaches 2 7/8 inches deep at 17/64 inch diameter
- 135-degree split point starts holes accurately without wandering
- 17/64-inch high-speed steel cuts cleanly through tough alloys
- Black oxide finish resists corrosion and reduces friction heat
- 28-degree helix clears chips efficiently for deeper drilling
- 4×D length reaches confined aircraft-structure fasteners easily
135-Degree Split-Point Aircraft Extension Drill
The Chicago-Latrobe 11014 is a fractional-inch drill bit sized at 17/64 inch for precision metalworking tasks. Its 135-degree split point reduces walking and enables faster starts on hard materials. The NAS-type extension design suits deep-hole drilling in aerospace and maintenance applications.
High-Speed Steel Construction
The high-speed steel body delivers reliable heat resistance during extended drilling cycles. A black oxide coating adds lubricity and corrosion protection for consistent performance. The 28-degree helix angle promotes efficient chip evacuation from deep cavities.
4xD Reach For Extended Access
This bit achieves a maximum drilling depth of 2 7/8 inches, matching a 4xD length-to-diameter ratio for reach in confined spaces. The fractional sizing ensures compatibility with standard imperial tooling setups. No additional accessories or software are bundled with the drill bit.
Highlights
- 135-degree split point starts holes accurately without wandering
- 17/64-inch high-speed steel cuts cleanly through tough alloys
- Black oxide finish resists corrosion and reduces friction heat
- 28-degree helix clears chips efficiently for deeper drilling
- 4×D length reaches confined aircraft-structure fasteners easily
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
How do I install the 17/64 in aircraft extension drill in a 135 degree split-point chuck and what step is often missed?
Insert the 17/64 in shank fully into the chuck jaws and tighten securely; the step often missed is verifying the 135 degree split point seats squarely before locking.
What maintenance or replacement will the high-speed steel 11014 drill need after repeated use in metal?
The black oxide coating wears over time; resharpen the 135 degree split point when cutting slows and replace the bit once the 2 7/8 in flute length shortens from regrinding.
What limit appears first when drilling deep holes at the 28 degree helix angle under sustained feed pressure?
Chip evacuation through the 4xD flute length becomes the limiting factor; heat builds once chips pack beyond the 2 7/8 in maximum drilling depth.
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