CHICAGO-LATROBE Jobber Length Drill Bit: 4.9 mm, 135° Split Point
SKU 3G-OTH-200161
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Frequently Asked Questions
What is a CHICAGO-LATROBE Jobber Length Drill Bit used for?
This 4.9 mm straw/bronze cobalt drill bit is designed for aerospace and high-strength alloy drilling. Its 135° split point reduces walking and thrust, making it ideal for precision holemaking in NAS-spec applications where cobalt hardness and heat resistance are critical.
What are the specifications of the CHICAGO-LATROBE 47859 drill bit?
The CHICAGO-LATROBE 47859 is a 4.9 mm jobber length drill bit with a 135° split point and straw/bronze cobalt finish. It meets NAS-spec requirements for aerospace use, offering durability in tough materials. The part number is 47859 and the decimal equivalent is 0.1929 inches.
Where to buy CHICAGO-LATROBE drill bits worldwide?
3G Electric supplies CHICAGO-LATROBE drill bits like the 47859 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this NAS-spec cobalt jobber-length drill bit for aerospace applications.
How to select the right CHICAGO-LATROBE drill bit for aerospace alloys?
For aerospace alloys, choose a cobalt jobber-length bit like the CHICAGO-LATROBE 47859 with a 135° split point to minimize walking. Match the diameter (4.9 mm) to your hole tolerance. The straw/bronze finish indicates cobalt content for heat resistance during high-speed drilling.
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Common applications for CHICAGO-LATROBECHICAGO-LATROBE Products
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.















