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

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

The CHICAGO-LATROBE Aircraft Extension Drill: Letter I is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 11228, MPN 11228). It features a 0.2720-inch diameter, 12-inch overall length, and a 135° split…

SKU 3G-OTH-208081

Brand

CHICAGO-LATROBE

Item

Aircraft Extension Drill: Letter I, 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

11228

Type

NAS 907 Type B 

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 aerospace and industrial applications where extended reach is required. Its NAS 907 Type B design and 135° split point make it suitable for high-strength materials like aircraft-grade aluminum and steel alloys.

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

The CHICAGO-LATROBE Aircraft Extension Drill (MPN 11228) has a 0.2720-inch diameter, 12-inch overall length, and a 135° split point. It conforms to NAS 907 Type B and is made from high-speed steel, designed for precision drilling in aerospace applications.

Where to buy CHICAGO-LATROBE Aircraft Extension Drill worldwide?

You can source the CHICAGO-LATROBE Aircraft Extension Drill worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location, ensuring compliance with international shipping requirements.

How to select the right CHICAGO-LATROBE Aircraft Extension Drill?

To select the right CHICAGO-LATROBE Aircraft Extension Drill, match the diameter and length to your hole depth and material. The 0.2720-inch Letter I size and 12-inch length suit extended-reach drilling. Ensure the NAS 907 Type B spec aligns with your aerospace or industrial application requirements.

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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