CHICAGO-LATROBE Jobber Length Drill Bit: 31/64", 135° Split Point, Black Oxide HSS
SKU 3G-OTH-189880
Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is the CHICAGO-LATROBE 45631 drill bit used for?
The CHICAGO-LATROBE 45631 is a NAS 907 Type B jobber-length drill bit designed for aerospace and precision industrial drilling. Its 135° split point reduces walking and thrust, making it suitable for high-strength alloys and sheet metal in aircraft assembly and maintenance.
What are the specifications of the CHICAGO-LATROBE 45631?
The CHICAGO-LATROBE 45631 is a 31/64" (0.4844 inch) jobber-length drill bit with a 135° split point, black oxide finish, and high-speed steel construction. It meets NAS 907 Type B specifications for aerospace applications. The manufacturer part number is 45631.
Where to buy CHICAGO-LATROBE 45631 worldwide?
3G Electric supplies the CHICAGO-LATROBE 45631 drill bit to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this NAS-spec aerospace tool.
How to select the right jobber-length drill bit for aerospace?
For aerospace drilling, choose a bit that meets NAS 907 Type B specs, like the CHICAGO-LATROBE 45631. A 135° split point helps prevent walking on curved surfaces. Match the diameter (31/64") to your fastener or hole tolerance. Black oxide HSS provides lubricity and heat resistance for high-strength alloys.
Used in
Common applications for CHICAGO-LATROBECHICAGO-LATROBE Products
3G Electric supplies CHICAGO-LATROBE nas-spec high-speed steel 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.















