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

CHICAGO-LATROBE Aircraft Extension Drill: 25/64", 12" Overall Lg, 135° Split Point

The CHICAGO-LATROBE Aircraft Extension Drill: 25/64" is a NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 11117, MPN 11117). It features a 0.3906" diameter, 12" overall length, 135° split point, and black…

SKU 3G-OTH-207875

Brand

CHICAGO-LATROBE

Item

Aircraft Extension Drill: 25/64", 12" Overall Lg, 135° Split Point

Local availability & support

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

11117

Type

Black Oxide HSS 

Overall Lg

12"

Split Point

135° 

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?

The CHICAGO-LATROBE Aircraft Extension Drill is used for drilling precision holes in aircraft assembly and maintenance. Its 12" overall length and 135° split point allow access to tight spaces and reduce walking on curved surfaces. It meets NAS 907 Type B specifications for aerospace applications.

What are the specifications of the CHICAGO-LATROBE 11117 drill bit?

The CHICAGO-LATROBE 11117 is a 25/64" (0.3906") diameter aircraft extension drill with a 12" overall length, 135° split point, and black oxide high-speed steel (HSS) construction. It conforms to NAS 907 Type B standards, making it suitable for aerospace drilling tasks.

Where to buy CHICAGO-LATROBE aircraft extension drills worldwide?

You can source CHICAGO-LATROBE aircraft extension drills worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the 11117 model.

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

Select based on hole diameter, required reach, and material. The 25/64" CHICAGO-LATROBE 11117 with 12" length suits deep or obstructed drilling in aerospace alloys. Its 135° split point reduces thrust and improves chip evacuation. Always match the drill to NAS 907 Type B specs for compliance.

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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