CHICAGO-LATROBE Jobber Length Drill Bit: #31, 135° Split Point, Straw/Bronze Cobalt
The CHICAGO-LATROBE Jobber Length Drill Bit #31 is a NAS-Spec Cobalt drill bit for aerospace applications, meeting NAS 907 Type B standards. It features a 135° split point and a Straw/Bronze Cobalt finish, with a…
SKU 3G-OTH-200440
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Product Description
The CHICAGO-LATROBE Jobber Length Drill Bit #31 is a NAS-Spec Cobalt drill bit for aerospace applications, meeting NAS 907 Type B standards. It features a 135° split point and a Straw/Bronze Cobalt finish, with a diameter of 0.1200 inches (MPN 47765).
Frequently Asked Questions
What is the CHICAGO-LATROBE Jobber Length Drill Bit #31 used for?
This NAS 907 Type B cobalt drill bit is designed for aerospace and high-strength alloy drilling. Its 135° split point reduces walking and thrust, making it suitable for precision holemaking in stainless steel, titanium, and other tough materials where NAS compliance is required.
What are the specifications of the CHICAGO-LATROBE 47765 drill bit?
The CHICAGO-LATROBE 47765 is a #31 jobber length drill bit with a 0.1200 inch diameter, 135° split point, and straw/bronze cobalt finish. It meets NAS 907 Type B specifications for aerospace applications, offering heat resistance and extended tool life in demanding materials.
Where to buy CHICAGO-LATROBE NAS 907 drill bits worldwide?
3G Electric supplies CHICAGO-LATROBE NAS 907 Type B cobalt drill bits to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility, ensuring you receive genuine aerospace-grade tooling without supply chain complications.
How to select the right CHICAGO-LATROBE cobalt drill bit for aerospace?
Select based on material hardness and hole tolerance. For titanium or stainless steel, choose a 135° split point cobalt bit like the NAS 907 Type B. Confirm diameter (e.g., #31 = 0.1200 inch) and shank type for your chuck. Always verify NAS compliance for aerospace work to ensure traceability and performance.
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3G Electric supplies CHICAGO-LATROBE nas-spec cobalt jobber-length drill bits for aerospace. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















