CHICAGO-LATROBE Aircraft Extension Drill: 29/64", 12" Overall Lg, 135° Split Point
The CHICAGO-LATROBE Aircraft Extension Drill (SKU 406X90, MPN 11121) is a NAS-Spec high-speed steel aircraft-extension drill bit with a 29/64" diameter. It features a 12" overall length, 135° split point, and black…
SKU 3G-OTH-207888
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Product Description
The CHICAGO-LATROBE Aircraft Extension Drill (SKU 406X90, MPN 11121) is a NAS-Spec high-speed steel aircraft-extension drill bit with a 29/64" diameter. It features a 12" overall length, 135° split point, and black oxide finish. The drill conforms to NAS 907 Type B specification and has a decimal equivalent of 0.4531 inches.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
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 hard materials. Its 12" overall length and 135° split point allow precise entry and chip evacuation in tight spaces, meeting NAS 907 Type B standards for aircraft maintenance and manufacturing.
What are the specifications of the CHICAGO-LATROBE 11121 drill?
The CHICAGO-LATROBE 11121 is a 29/64" diameter, 12" overall length aircraft extension drill with a 135° split point and black oxide HSS finish. It conforms to NAS 907 Type B specification, with a decimal equivalent of 0.4531 inches, ideal for precision aerospace drilling.
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 and customs clearance to deliver this NAS-spec drill bit to your facility, ensuring compliance with aerospace standards.
How to select the right aircraft extension drill for NAS 907 applications?
Select a drill that matches the required diameter, overall length, and point geometry per NAS 907 Type B. For deep-hole drilling in aerospace alloys, a 135° split point and black oxide HSS finish, as on the CHICAGO-LATROBE 11121, reduce walking and improve chip flow. Consult your spec sheet for exact dimensions.
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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.















