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

CHICAGO-LATROBE Aircraft Extension Drill: #14, 12" Overall Lg, 135° Split Point

The CHICAGO-LATROBE Aircraft Extension Drill: #14 is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 406Y08, MPN 11138). It features a 0.1820-inch diameter, 12-inch overall length, 135° split point…

SKU 3G-OTH-208025

Brand

CHICAGO-LATROBE

Item

Aircraft Extension Drill: #14, 12" Overall Lg, 135° Split Point

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

11138

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 #14 used for?

This drill is designed for aerospace and industrial applications requiring deep-hole drilling in tight spaces. Its 12-inch overall length and 135° split point reduce walking and improve chip evacuation in high-strength materials, meeting NAS 907 Type B specifications for aircraft maintenance and manufacturing.

What are the specifications of the CHICAGO-LATROBE Aircraft Extension Drill #14?

The CHICAGO-LATROBE #14 drill (MPN 11138) has a 0.1820-inch diameter, 12-inch overall length, 135° split point, and black oxide finish on high-speed steel. It conforms to NAS 907 Type B standards, making it suitable for precision drilling in aerospace-grade alloys.

Where to buy the CHICAGO-LATROBE Aircraft Extension Drill #14 worldwide?

3G Electric supplies the CHICAGO-LATROBE #14 drill (SKU 406Y08) to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this NAS-spec tool.

How to select the right aircraft extension drill for deep-hole drilling?

Choose a drill with sufficient overall length to reach the hole depth, like the 12-inch CHICAGO-LATROBE #14. A 135° split point reduces thrust and walking on curved surfaces. Ensure the drill meets applicable NAS specifications, such as NAS 907 Type B, for material compatibility and performance.

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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