Chicago-Latrobe
Chicago-Latrobe 11103 135 Degree NAS-Type Aircraft Extension Drill 11/64 in
Aircraft extension drill with 135-degree split point for high-performance machining up to 2 1/8 in depth
- 135-degree split point starts holes precisely
- 11/64 inch high-speed steel drills tough alloys
- 28-degree helix clears chips efficiently
- Black oxide finish resists wear and corrosion
- 2 1/8 inch flute depth reaches confined spots
Precision Aircraft Extension Drill
The Chicago-Latrobe 11103 is a high-performance drilling tool manufactured for aerospace and precision metalworking tasks. Its NAS-type geometry and split-point tip are engineered to start accurately on contact and maintain centring without a pilot hole. The fractional 11/64 inch diameter suits specific rivet and fastener clearances found in airframe assembly and maintenance.
Suited for controlled deep-hole work
Machinists and aviation technicians who need consistent chip evacuation in deep, straight holes will benefit from the 135-degree point angle and black oxide finish. The 28-degree helix angle supports efficient material removal at a 4xD depth ratio. Builders requiring carbide-tipped tooling or coolant-fed drilling should evaluate alternative designs not covered by this high-speed steel construction.
135-degree split point decides fit
The 135-degree split-point geometry is the critical specification that determines whether this drill matches the application. It reduces walk on hard alloys and improves hole accuracy in high-speed steel, titanium and stainless steel. Verify the 11/64 inch diameter and 2-1/8 inch maximum drilling depth against the engineering drawing before selection.
Highlights
- 135-degree split point starts holes precisely
- 11/64 inch high-speed steel drills tough alloys
- 28-degree helix clears chips efficiently
- Black oxide finish resists wear and corrosion
- 2 1/8 inch flute depth reaches confined spots
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
How much heat does the 135 degree split point generate when drilling all day?
The 135 degree split point on this high-speed steel drill reduces thrust and heat buildup during extended drilling in tough materials.
What tool holder do I need for the 11/64 inch shank?
Use a standard drill chuck or collet that accepts an 11/64 inch fractional shank; no special adapter is required.
Will this 4xD length bit fit in my older drill press with limited quill travel?
The 2 1/8 inch maximum drilling depth suits most drill presses; verify your quill stroke exceeds that length before use.
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