Chicago-Latrobe
Chicago-Latrobe 11116 135 Degree NAS Aircraft Extension Drill
Aircraft extension drill with 135-degree split point and black oxide finish for high-performance machining
- 135-degree split point starts on contact without wandering
- High-speed steel with black oxide resists wear and heat
- 28-degree helix clears chips efficiently in deep holes
- 4×D reach drills 3-5/8 in deep in one pass
- NAS-type geometry meets aircraft quality standards
Chicago-Latrobe 11116 Extension Drill
The Chicago-Latrobe 11116 is a new NAS-type aircraft extension drill built for precision drilling in aerospace maintenance and manufacturing. It suits mechanics and technicians who need accurate hole placement in deep or confined structural locations.
135 Degree Split Point Geometry
A 135-degree split point reduces thrust and prevents walking on hard alloys and composite stacks. The high-speed steel body with black oxide finish resists wear and chip welding during extended production runs.
28 Degree Helix and 4xD Reach
The 28-degree helix angle improves chip evacuation at the maximum 3 5/8 inch drilling depth. Fractional 3/8 inch sizing fits standard aircraft tooling without adapter sleeves or collet changes.
Highlights
- 135-degree split point starts on contact without wandering
- High-speed steel with black oxide resists wear and heat
- 28-degree helix clears chips efficiently in deep holes
- 4×D reach drills 3-5/8 in deep in one pass
- NAS-type geometry meets aircraft quality standards
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
What does the 135-degree point angle do when the drill is in the chuck?
The 135-degree split point centres the bit instantly and reduces wandering on hard materials, so the hole starts exactly where you place it.
How does the black oxide finish affect the drill's performance in a high-speed steel bit?
Black oxide reduces friction and resists corrosion, letting the high-speed steel bit run cooler and last longer in repeated drilling cycles.
What shank size does the 3/8-inch bit need to fit a standard drill chuck?
The 3/8-inch diameter shank fits any standard 3/8-inch or larger drill chuck without an adapter.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
