CHICAGO-LATROBE Aircraft Extension Drill: #43, 12" Overall Lg, 135° Split Point
The CHICAGO-LATROBE Aircraft Extension Drill: #43 is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 406Y37, MPN 11167). It features a 0.0890-inch diameter, 12-inch overall length, 135° split point…
SKU 3G-OTH-207947
Need installation or engineering help?
Ask a question
Product Description
The CHICAGO-LATROBE Aircraft Extension Drill: #43 is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 406Y37, MPN 11167). It features a 0.0890-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 #43 used for?
This NAS-spec high-speed steel drill bit is designed for deep-hole drilling in aircraft assembly and maintenance. Its 12-inch overall length and 135° split point allow precise, chatter-free drilling in tight spaces, while the black oxide finish reduces friction and extends tool life.
What are the specifications of the CHICAGO-LATROBE 11167 drill bit?
The CHICAGO-LATROBE 11167 is a #43 aircraft extension drill bit with a 0.0890-inch diameter, 12-inch overall length, 135° split point, and black oxide HSS construction. It conforms to NAS 907 Type B, making it suitable for aerospace applications requiring controlled hole depth.
Where to buy CHICAGO-LATROBE aircraft extension drills worldwide?
3G Electric supplies CHICAGO-LATROBE aircraft extension drills like the #43 (MPN 11167) to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive genuine NAS-spec tooling for your aerospace or industrial operations.
How to select the right aircraft extension drill bit for deep-hole drilling?
Choose a drill bit that matches your hole diameter, depth, and material. For aerospace work, NAS 907 Type B bits like the CHICAGO-LATROBE #43 offer a 135° split point for self-centering and reduced thrust. Ensure overall length exceeds your drilling depth, and use proper cutting fluid for HSS tools.
Used in
Common applications for CHICAGO-LATROBECHICAGO-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.















