CHICAGO-LATROBENAS-Spec High-Speed Steel Aircraft-Extension Drill Bits

CHICAGO-LATROBE Aircraft Extension Drill: #1, 12" Overall Lg, 135° Split Point

The CHICAGO-LATROBE Aircraft Extension Drill: #1 is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 406X94, MPN 11125). It features a 12" overall length, 135° split point, and black oxide HSS finish…

SKU 3G-OTH-208070

Brand

CHICAGO-LATROBE

Item

Aircraft Extension Drill: #1, 12" Overall Lg, 135° Split Point

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

11125

Type

Black Oxide HSS 

Overall Lg

12"

Split Point

135° 

View Full Spec Sheet

Technical Documents

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CHICAGO-LATROBE Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the CHICAGO-LATROBE Aircraft Extension Drill #1 used for?

The CHICAGO-LATROBE Aircraft Extension Drill #1 is designed for drilling in tight, hard-to-reach spaces on aircraft structures. Its 12" overall length and 135° split point allow precise entry without walking, while the black oxide HSS finish resists wear. It meets NAS 907 Type B specs for aerospace maintenance and manufacturing.

What are the specifications of the CHICAGO-LATROBE Aircraft Extension Drill #1?

The CHICAGO-LATROBE Aircraft Extension Drill #1 (MPN 11125) has a 0.2280-inch diameter, 12" overall length, 135° split point, and black oxide high-speed steel (HSS) construction. It conforms to NAS 907 Type B and is classified as a #1 aircraft extension drill bit.

Where to buy CHICAGO-LATROBE Aircraft Extension Drill #1 worldwide?

3G Electric supplies the CHICAGO-LATROBE Aircraft Extension Drill #1 worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this NAS 907 Type B drill bit for your aerospace operations.

How to select the right CHICAGO-LATROBE aircraft extension drill bit?

Select based on hole diameter, reach, and material. The CHICAGO-LATROBE #1 drill (0.2280" diameter, 12" length) suits deep-access drilling in aluminum or steel. Ensure the 135° split point matches your application for reduced thrust. For NAS 907 compliance, verify the bit meets Type B specs. 3G Electric can advise on sizing.

Used in

Common applications for CHICAGO-LATROBE

Aerospace assembly — Chicago-Latrobe NAS 907 Type B aircraft-extension drill bits for drilling fastener holes in aluminum and titanium skins.

Metal fabrication — Chicago-Latrobe reduced-shank drill bit sets for enlarging holes in structural steel using magnetic drill presses.

Maintenance repair — Chicago-Latrobe left-hand cobalt jobber-length drill bits for removing broken bolts in machinery.

Tool and die making — Chicago-Latrobe jobber-length drill bit sets with 135° split point for precision hole drilling in hardened steels.

Automotive repair — Chicago-Latrobe spiral-flute screw extractors for removing seized fasteners in engine blocks or exhaust systems.

General manufacturing — Chicago-Latrobe HSS jobber-length drill bits for production drilling in mild steel and cast iron.

CHICAGO-LATROBE Products

3G Electric supplies CHICAGO-LATROBE nas-spec high-speed steel aircraft-extension drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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