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

CHICAGO-LATROBE Aircraft Extension Drill: 5/16", 12" Overall Lg, 135° Split Point

SKU 3G-OTH-207858

Brand

CHICAGO-LATROBE

Item

Aircraft Extension Drill: 5/16", 12" Overall Lg, 135° Split Point

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

11112

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

The CHICAGO-LATROBE Aircraft Extension Drill is a NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit with a 5/16" diameter. It features a 12" overall length, 135° split point, and black oxide finish, meeting NAS 907 Type B specifications. The drill bit has a diameter of 0.3125 inches and is identified by manufacturer part number 11112.

Frequently Asked Questions

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

This drill is designed for aerospace and industrial applications requiring deep-hole drilling in tight spaces. Its 12" overall length and 135° split point allow precise entry into aircraft structures, while the black oxide HSS construction resists wear and reduces friction during extended use.

What are the specifications of the CHICAGO-LATROBE 11112 drill?

The CHICAGO-LATROBE 11112 is a 5/16" diameter, 12" overall length aircraft extension drill with a 135° split point and black oxide HSS finish. It meets NAS 907 Type B specifications and has a 0.3125-inch diameter. The manufacturer part number is 11112.

Where to buy CHICAGO-LATROBE aircraft extension drills worldwide?

3G Electric supplies CHICAGO-LATROBE aircraft extension drills worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order the 11112 or other NAS-spec drill bits for your aerospace or manufacturing needs.

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

Choose a drill with sufficient overall length to reach the hole depth, like the 12" CHICAGO-LATROBE 11112. Ensure the point angle (135° split point) matches the material hardness. Confirm NAS specification compliance (e.g., NAS 907 Type B) for aerospace applications. Always verify diameter and shank compatibility with your tool holder.

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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