CHICAGO-LATROBE Jobber Length Drill Bit: #21, 118° Point, HSS
SKU 3G-OTH-235708
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Frequently Asked Questions
What is a Chicago-Latrobe #21 left-hand drill bit used for?
A Chicago-Latrobe #21 left-hand drill bit is used to drill holes in metal when the drill rotation is counterclockwise, commonly for extracting broken bolts or screws. The 118° point and HSS construction suit general-purpose drilling in steel, aluminum, and other alloys.
What are the specifications of the Chicago-Latrobe 44491 drill bit?
The Chicago-Latrobe 44491 is a #21 jobber-length drill bit with a 0.1590-inch diameter, 118° point angle, and high-speed steel construction. It features a left-hand spiral for counterclockwise rotation. The manufacturer part number is 44491, and it is designed for precision drilling in metalworking applications.
Where to buy Chicago-Latrobe 44491 drill bits worldwide?
You can source Chicago-Latrobe 44491 drill bits worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this left-hand HSS jobber-length drill bit.
How to select the correct left-hand drill bit for bolt extraction?
To select a left-hand drill bit for bolt extraction, match the bit diameter to the broken fastener's minor thread diameter. A #21 size (0.1590 inch) suits small bolts. Use a Chicago-Latrobe HSS bit with a 118° point for general steel. Ensure your drill runs in reverse (counterclockwise) to engage the left-hand spiral.
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Common applications for CHICAGO-LATROBECHICAGO-LATROBE Products
3G Electric supplies CHICAGO-LATROBE left-hand high-speed steel jobber-length drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
