CHICAGO-LATROBE Jobber Length Drill Bit: #51, 135° Split Point, TiAlN-Coated HSS
The CHICAGO-LATROBE Jobber Length Drill Bit #51 is a NAS-Spec High-Speed Steel jobber-length drill bit for aerospace, featuring a TiAlN-coated HSS construction with a 135° split point per NAS 907 Type B. With a…
SKU 3G-OTH-190242
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Product Description
The CHICAGO-LATROBE Jobber Length Drill Bit #51 is a NAS-Spec High-Speed Steel jobber-length drill bit for aerospace, featuring a TiAlN-coated HSS construction with a 135° split point per NAS 907 Type B. With a diameter of 0.0670 inches (MPN 42721), this bit is designed for precision drilling in demanding applications.
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 Jobber Length Drill Bit #51 used for?
This drill bit is designed for precision drilling in aerospace applications, meeting NAS 907 Type B specifications. Its 135° split point reduces walking, while the TiAlN coating extends tool life on high-strength alloys. It is ideal for maintenance and production tasks requiring tight tolerances.
What are the specifications of the CHICAGO-LATROBE 42721 drill bit?
The CHICAGO-LATROBE 42721 is a #51 jobber length drill bit with a 0.0670-inch diameter, 135° split point, and TiAlN-coated high-speed steel. It conforms to NAS 907 Type B standards for aerospace use. The split point geometry enhances cutting accuracy and reduces thrust.
Where to buy CHICAGO-LATROBE drill bits worldwide?
3G Electric supplies CHICAGO-LATROBE drill bits worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner, we provide this NAS 907 Type B bit (MPN 42721) to aerospace and industrial buyers. Contact us for availability and lead times.
How to select the right CHICAGO-LATROBE drill bit for aerospace work?
Select based on material and hole tolerance. For aerospace alloys, choose TiAlN-coated HSS bits like the #51 (0.0670 inch) with a 135° split point to minimize walking. Verify NAS 907 Type B compliance for critical applications. CHICAGO-LATROBE bits offer reliable performance in demanding environments.
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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.















