CHICAGO-LATROBE Aircraft Extension Drill: #39, 12" Overall Lg, 135° Split Point
The CHICAGO-LATROBE Aircraft Extension Drill: #39 is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 406Y33, MPN 11163) with a 0.0995-inch diameter, 12-inch overall length, 135° split point, and black…
SKU 3G-OTH-207958
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Product Description
The CHICAGO-LATROBE Aircraft Extension Drill: #39 is an NAS-Spec High-Speed Steel Aircraft-Extension Drill Bit (SKU 406Y33, MPN 11163) with a 0.0995-inch diameter, 12-inch overall length, 135° split point, and black oxide finish. It conforms to NAS 907 Type B standards.
Frequently Asked Questions
What is the CHICAGO-LATROBE Aircraft Extension Drill #39 used for?
This NAS-spec high-speed steel drill bit is designed for deep-hole drilling in aircraft and aerospace applications. Its 12-inch overall length and 135° split point allow precise, chatter-free drilling in tight spaces, meeting NAS 907 Type B standards for critical structural work.
What are the specifications of the CHICAGO-LATROBE 11163 drill bit?
The CHICAGO-LATROBE 11163 is a #39 aircraft extension drill with a 0.0995-inch diameter, 12-inch overall length, 135° split point, and black oxide HSS finish. It conforms to NAS 907 Type B standards, ensuring reliability for demanding aerospace drilling tasks.
Where to buy CHICAGO-LATROBE aircraft extension drills worldwide?
3G Electric supplies CHICAGO-LATROBE aircraft extension drills like the #39 (MPN 11163) to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive genuine NAS-spec tooling for your aerospace operations.
How to select the right aircraft extension drill for deep-hole drilling?
Choose a drill that meets NAS 907 Type B standards, like the CHICAGO-LATROBE #39 with a 135° split point and black oxide finish. Match the diameter (0.0995 inches) and overall length (12 inches) to your hole depth and material. Consult 3G Electric for application-specific guidance.
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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.















