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CHICAGO-LATROBE NAS-Spec HSS Aircraft-Extension Drill Bit #47 - 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 #47

The CHICAGO-LATROBE Aircraft Extension Drill: #47 is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 11171, MPN 11171). It features a 0.0785-inch diameter, 12-inch overall length, 135° split point, and…

SKU 3G-OTH-207935

Brand
CHICAGO-LATROBE
Item
NAS-Spec HSS Aircraft-Extension Drill Bit #47
Part Number
11171
Category
NAS-Spec High-Speed Steel Aircraft-Extension Drill Bits
Available to Order
Also known as:11171CHICAGO-LATROBE
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
11171
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: #47 is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 11171, MPN 11171). It features a 0.0785-inch diameter, 12-inch overall length, 135° split point, and black oxide HSS construction, conforming to NAS 907 Type B.

Frequently Asked Questions

What is the CHICAGO-LATROBE Aircraft Extension Drill #47 used for?

This drill is designed for deep-hole drilling in aerospace and industrial applications where extended reach is required. Its 12-inch overall length and 135° split point reduce walking and improve chip evacuation in tough materials like stainless steel and titanium.

What are the specifications of the CHICAGO-LATROBE Aircraft Extension Drill #47?

The drill has a 0.0785-inch diameter, 12-inch overall length, 135° split point, and black oxide HSS construction. It conforms to NAS 907 Type B and carries MPN 11171. These specs ensure precision and durability in demanding aircraft maintenance and fabrication tasks.

Where to buy CHICAGO-LATROBE Aircraft Extension Drill #47 worldwide?

3G Electric supplies the CHICAGO-LATROBE Aircraft Extension Drill #47 to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this NAS-spec drill bit to your facility, regardless of location.

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

Choose a drill with a 135° split point to reduce thrust and prevent walking on curved surfaces. Ensure overall length matches your depth requirement—12 inches for extended reach. Black oxide HSS provides heat resistance and lubricity. Confirm NAS 907 compliance for aerospace standards.

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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