Chicago-Latrobe
Chicago-Latrobe 11098 135 Degree NAS-Type Aircraft Extension Drill 3/32 in
A 135-degree split-point aircraft extension drill bit in 3/32 inch high-speed steel with black oxide finish for deep-hole drilling
- 135° split point starts drilling on contact without walking
- High-speed steel with black-oxide finish resists wear and corrosion
- 28° helix clears chips efficiently for deeper holes
- 4×D flute length reaches 1-1/4 in maximum drilling depth
- NAS-type design meets aircraft-industry precision standards
Aircraft Extension Drill 11098
The Chicago-Latrobe 11098 is a NAS-type aircraft extension drill built for precision drilling in aviation maintenance and manufacturing. Its 3/32 inch fractional size and 135-degree split point deliver accurate hole starts in tough alloys. Machinists and A&P technicians choose it for deep-reach applications where standard jobber drills cannot access the workpiece.
High-Speed Steel Construction
The high-speed steel body with black oxide finish resists wear during extended use in aluminium, titanium and steel structures. A 28-degree helix angle promotes efficient chip evacuation at depths up to 1 1/4 inches. The 4xD length-to-diameter ratio clears obstructions without requiring a separate extension holder or custom tooling.
Sustained Drilling Performance
Under continuous load the split-point geometry maintains centring accuracy and reduces thrust force across the full 1 1/4 inch drilling depth. High-speed steel retains hardness at elevated temperatures generated during deep-hole work in high-performance alloys. The black oxide surface treatment holds coolant effectively to prevent built-up edge during long production runs.
Highlights
- 135° split point starts drilling on contact without walking
- High-speed steel with black-oxide finish resists wear and corrosion
- 28° helix clears chips efficiently for deeper holes
- 4×D flute length reaches 1-1/4 in maximum drilling depth
- NAS-type design meets aircraft-industry precision standards
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
How deep can the 11098 drill bit cut before it reaches its limit?
The 11098 drill bit has a maximum drilling depth of 1 1/4 in, which is the practical limit reached first during sustained use.
How much heat does the high speed steel bit generate when drilling all day?
High speed steel with black oxide finish manages heat effectively during extended drilling sessions in metal.
What shank size must my drill chuck accept for this 3/32 in bit?
The 3/32 in fractional inch shank fits standard drill chucks that accommodate that diameter.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
