CHICAGO-LATROBE Extra Long Drill Bit: 45/64", 12" Overall Lg, 118° Notched Point
The CHICAGO-LATROBE Extra Long Drill Bit (SKU 439A08, MPN 50644) is a 45/64" high-speed steel extended-length drill bit with a 12" overall length, 118° notched point, and black oxide finish. It is designed for…
SKU 3G-OTH-207441
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Product Description
The CHICAGO-LATROBE Extra Long Drill Bit (SKU 439A08, MPN 50644) is a 45/64" high-speed steel extended-length drill bit with a 12" overall length, 118° notched point, and black oxide finish. It is designed for deep-hole drilling applications requiring extended reach.
Frequently Asked Questions
What is the CHICAGO-LATROBE Extra Long Drill Bit used for?
This CHICAGO-LATROBE Extra Long Drill Bit is designed for drilling deep holes in metal, wood, and plastic where standard-length bits cannot reach. Its 12" overall length and 118° notched point reduce walking and improve cutting accuracy in industrial maintenance, fabrication, and tool-and-die applications.
What are the specifications of the CHICAGO-LATROBE Extra Long Drill Bit?
The CHICAGO-LATROBE Extra Long Drill Bit (MPN 50644) has a 45/64" diameter (0.7031"), 12" overall length, and a 118° notched point. It is made from black oxide high-speed steel (HSS) for increased wear resistance and heat dissipation during extended drilling operations.
Where to buy CHICAGO-LATROBE Extra Long Drill Bits worldwide?
3G Electric supplies CHICAGO-LATROBE Extra Long Drill Bits worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this HSS extended-length drill bit.
How to select the right CHICAGO-LATROBE Extra Long Drill Bit?
Select based on hole depth and material. For holes deeper than 3x the diameter, choose an extended-length bit like this 12" overall length model. The 118° notched point suits general-purpose drilling in steel, while black oxide HSS provides better lubricity and chip evacuation than plain HSS.
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3G Electric supplies CHICAGO-LATROBE high-speed steel extended-length drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















