CHICAGO-LATROBE Jobber Length Drill Bit: #55, 135° Split Point, Black Oxide HSS
The CHICAGO-LATROBE Jobber Length Drill Bit #55 is a NAS-Spec High-Speed Steel Jobber-Length Drill Bit for Aerospace, featuring a 135° Split Point and Black Oxide HSS finish, conforming to NAS 907 Type B. With a…
SKU 3G-OTH-189921
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Product Description
The CHICAGO-LATROBE Jobber Length Drill Bit #55 is a NAS-Spec High-Speed Steel Jobber-Length Drill Bit for Aerospace, featuring a 135° Split Point and Black Oxide HSS finish, conforming to NAS 907 Type B. With a diameter of 0.0520 inches (MPN 44725), this bit is designed for precision drilling in aerospace applications.
Frequently Asked Questions
What is the CHICAGO-LATROBE #55 Jobber Length Drill Bit used for?
This drill bit is designed for aerospace applications requiring NAS 907 Type B compliance. Its #55 wire-gauge diameter (0.0520 in) and 135° split point enable precise hole drilling in high-strength alloys and sheet metals without walking, making it suitable for aircraft assembly and maintenance.
What are the specifications of the CHICAGO-LATROBE 44725 drill bit?
The CHICAGO-LATROBE 44725 is a #55 wire-gauge jobber length drill bit with a 0.0520 in diameter, 135° split point, and black oxide finish on high-speed steel. It meets NAS 907 Type B standards for aerospace drilling, offering durability and chip evacuation in demanding materials.
Where to buy CHICAGO-LATROBE 44725 drill bits worldwide?
3G Electric supplies the CHICAGO-LATROBE 44725 drill bit to global customers. As an industrial distributor, we handle full logistics, customs clearance, and delivery worldwide. Contact us to source this NAS-spec bit for your aerospace operations.
How to select the correct CHICAGO-LATROBE drill bit for aerospace work?
Select a bit that matches the required hole diameter and material. For aerospace alloys, choose a 135° split point to reduce thrust and prevent wandering. Ensure the bit meets NAS 907 Type B specs for compliance. The CHICAGO-LATROBE #55 bit is suitable for precision holes in sheet metal and composites.
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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.















