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CHICAGO-LATROBE 21/64" TiCN-Coated HSS Jobber-Length Drill Bit - High-Speed Steel Jobber-Length Drill Bits for Deep Hole-Drilling
CHICAGO-LATROBEHigh-Speed Steel Jobber-Length Drill Bits for Deep Hole-Drilling

CHICAGO-LATROBE 21/64" TiCN-Coated HSS Jobber-Length Drill Bit

The CHICAGO-LATROBE Jobber Length Drill Bit (MPN 42021) is a TiCN-coated high-speed steel drill bit with a 135° split point and fast spiral, designed for deep hole-drilling. It features a 21/64" diameter (0.3281 in)…

SKU 3G-OTH-193996

Brand
CHICAGO-LATROBE
Item
21/64" TiCN-Coated HSS Jobber-Length Drill Bit
Part Number
42021
Category
High-Speed Steel Jobber-Length Drill Bits for Deep Hole-Drilling
Available to Order
Also known as:42021CHICAGO-LATROBE
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
42021
Type
TiCN-Coated HSS, Fast Spiral
Split Point
135°

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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CHICAGO-LATROBE Jobber Length Drill Bit (MPN 42021) is a TiCN-coated high-speed steel drill bit with a 135° split point and fast spiral, designed for deep hole-drilling. It features a 21/64" diameter (0.3281 in) and is supplied as a jobber-length tool.

Frequently Asked Questions

What is the CHICAGO-LATROBE 42021 drill bit used for?

The CHICAGO-LATROBE 42021 is a jobber-length drill bit designed for deep hole-drilling in metal. Its 135° split point reduces walking and thrust, while the TiCN coating extends tool life on hard materials. Common applications include general machining, maintenance, and production work in industrial settings.

What are the specifications of the CHICAGO-LATROBE 42021 drill bit?

This CHICAGO-LATROBE bit has a 21/64" (0.3281") diameter, 135° split point, and TiCN-coated high-speed steel with a fast spiral flute design. It is a jobber-length bit for deep hole-drilling. The manufacturer part number is 42021.

Where to buy CHICAGO-LATROBE 42021 drill bits worldwide?

3G Electric supplies CHICAGO-LATROBE 42021 drill bits worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this item to any country.

How to select the right CHICAGO-LATROBE drill bit for deep hole-drilling?

For deep hole-drilling, choose a jobber-length bit with a 135° split point to reduce walking and a TiCN coating for heat resistance. The CHICAGO-LATROBE 42021 meets these criteria. Ensure the diameter matches your hole size and the flute length is sufficient for the depth required.

Used in

Common applications for CHICAGO-LATROBE
Aerospace manufacturing — Chicago-Latrobe NAS-spec jobber-length drill bits (e.g., MPN 42631) for drilling holes in airframe components.
Metal fabrication — Chicago-Latrobe single-flute countersinks (e.g., MPN 56774) for deburring and chamfering holes in steel plates.
Machine shop — Chicago-Latrobe 82° countersinks (e.g., MPN 56738) for creating flush-mount recesses for flat-head screws in assemblies.
Maintenance and repair — Chicago-Latrobe 90° countersinks (e.g., MPN 56760) for chamfering holes and removing burrs on industrial equipment.
Automotive production — Chicago-Latrobe HSS drill bits for holemaking in engine blocks and chassis components.
General machining — Chicago-Latrobe countersinks in various body diameters for chamfering and deburring in job shops.
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CHICAGO-LATROBE Products

3G Electric supplies CHICAGO-LATROBE high-speed steel jobber-length drill bits for deep hole-drilling. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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