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CHICAGO-LATROBE NAS-Spec HSS Aircraft-Extension Drill Bit #20 - NAS-Spec High-Speed Steel Aircraft-Extension Drill Bits
CHICAGO-LATROBENAS-Spec High-Speed Steel Aircraft-Extension Drill Bits

CHICAGO-LATROBE NAS-Spec HSS Aircraft-Extension Drill Bit #20

The CHICAGO-LATROBE Aircraft Extension Drill: #20 is a NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 11144, MPN 11144) with a 0.1610-inch diameter, 12-inch overall length, 135° split point, and black…

SKU 3G-OTH-208009

Brand
CHICAGO-LATROBE
Item
NAS-Spec HSS Aircraft-Extension Drill Bit #20
Part Number
11144
Category
NAS-Spec High-Speed Steel Aircraft-Extension Drill Bits
Available to Order
Also known as:11144CHICAGO-LATROBE
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
11144
Type
Black Oxide HSS
Overall Lg
12"
Split Point
135°

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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CHICAGO-LATROBE Aircraft Extension Drill: #20 is a NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 11144, MPN 11144) with a 0.1610-inch diameter, 12-inch overall length, 135° split point, and black oxide finish. It conforms to NAS 907 Type B specification.

Frequently Asked Questions

What is the CHICAGO-LATROBE Aircraft Extension Drill #20 used for?

This NAS-spec high-speed steel drill bit is designed for drilling deep, precise holes in aircraft structures and other demanding industrial applications. Its 12-inch overall length and 135° split point allow for accurate starts and efficient chip evacuation in tight spaces.

What are the specifications of the CHICAGO-LATROBE 11144 drill bit?

The CHICAGO-LATROBE 11144 is a #20 aircraft extension drill bit with a 0.1610-inch diameter, 12-inch overall length, 135° split point, and black oxide finish on high-speed steel. It conforms to NAS 907 Type B specification for aerospace-grade drilling.

Where to buy CHICAGO-LATROBE aircraft extension drills worldwide?

3G Electric supplies and delivers the CHICAGO-LATROBE 11144 aircraft extension drill worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, wherever it is located.

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

Select a drill bit with a length sufficient to reach the hole depth, a split point for self-centering, and a material like high-speed steel for durability. The CHICAGO-LATROBE #20 with 12-inch length and 135° split point is a proven choice for aerospace applications.

Used in

Common applications for CHICAGO-LATROBE
Aerospace manufacturing — Chicago-Latrobe NAS-spec jobber-length drill bits (e.g., MPN 42631) for drilling holes in airframe components.
Metal fabrication — Chicago-Latrobe single-flute countersinks (e.g., MPN 56774) for deburring and chamfering holes in steel plates.
Machine shop — Chicago-Latrobe 82° countersinks (e.g., MPN 56738) for creating flush-mount recesses for flat-head screws in assemblies.
Maintenance and repair — Chicago-Latrobe 90° countersinks (e.g., MPN 56760) for chamfering holes and removing burrs on industrial equipment.
Automotive production — Chicago-Latrobe HSS drill bits for holemaking in engine blocks and chassis components.
General machining — Chicago-Latrobe countersinks in various body diameters for chamfering and deburring in job shops.
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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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Black oxide high-speed steel aircraft-extension drill bit with 135° split point and 12" overall length. Conforms to NAS 907 Type B. Used for drilling deep holes in aircraft structures and other tight-access industrial applications
CHICAGO-LATROBE
Black oxide high-speed steel aircraft-extension drill bit with 135° split point and 12" overall length. Conforms to NAS 907 Type B. Used for drilling deep holes in aircraft structures and other tight-access industrial applications
This NAS 907 Type B aircraft-extension drill bit is made from high-speed steel with a black oxide finish. It features a 135° split point for reduced walking on curved surfaces and an extended 6-inch overall length for reaching confined areas. Suitable for drilling in tough alloys in aerospace and precision metalworking applications
CHICAGO-LATROBE
This NAS 907 Type B aircraft-extension drill bit is made from high-speed steel with a black oxide finish. It features a 135° split point for reduced walking on curved surfaces and an extended 6-inch overall length for reaching confined areas. Suitable for drilling in tough alloys in aerospace and precision metalworking applications

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