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

CHICAGO-LATROBE Aircraft Extension Drill: 15/64", 12" Overall Lg, 135° Split Point

The CHICAGO-LATROBE Aircraft Extension Drill (15/64") is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 406X76). It features a 0.2344" diameter, 12" overall length, 135° split point, and black oxide…

SKU 3G-OTH-207839

Brand

CHICAGO-LATROBE

Item

Aircraft Extension Drill: 15/64", 12" Overall Lg, 135° Split Point

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

11107

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 used for?

This 15/64" drill is designed for deep-hole drilling in aircraft assembly and maintenance. Its 12" overall length and 135° split point reduce walking and cutting forces, making it ideal for precision work in tight spaces on aerospace-grade materials.

What are the specifications of the CHICAGO-LATROBE 11107 drill?

The CHICAGO-LATROBE 11107 is a 15/64" (0.2344") diameter aircraft extension drill with 12" overall length, 135° split point, and black oxide HSS finish. It meets NAS 907 Type B specifications for aerospace drilling applications.

Where to buy CHICAGO-LATROBE aircraft extension drills worldwide?

3G Electric supplies CHICAGO-LATROBE aircraft extension drills worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this NAS 907 Type B drill bit.

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

Choose a drill with NAS 907 Type B compliance for aerospace standards. The 135° split point on this CHICAGO-LATROBE bit reduces thrust and prevents walking. Match diameter and overall length to your hole depth and material—this 12" bit suits deep access in aluminum or alloy stacks.

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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