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CHICAGO-LATROBE General Purpose HSS Jobber-Length Drill Bit, 21/64" - General Purpose High-Speed Steel Jobber-Length Drill Bits
CHICAGO-LATROBEGeneral Purpose High-Speed Steel Jobber-Length Drill Bits

CHICAGO-LATROBE General Purpose HSS Jobber-Length Drill Bit, 21/64"

The CHICAGO-LATROBE Jobber Length Drill Bit (SKU 57221, MPN 57221) is a general purpose high-speed steel drill bit with a 21/64" (0.3281) diameter, featuring a 118° split point and black oxide finish. 3G Electric…

SKU 3G-OTH-192329

Brand
CHICAGO-LATROBE
Item
General Purpose HSS Jobber-Length Drill Bit, 21/64"
Part Number
57221
Category
General Purpose High-Speed Steel Jobber-Length Drill Bits
Available to Order
Also known as:57221CHICAGO-LATROBE
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
57221
Type
Black Oxide HSS
Split Point
118°

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

Product Description

The CHICAGO-LATROBE Jobber Length Drill Bit (SKU 57221, MPN 57221) is a general purpose high-speed steel drill bit with a 21/64" (0.3281) diameter, featuring a 118° split point and black oxide finish. 3G Electric interprets your demand for this OEM-specified tool and delivers it across 14 industrial departments — with specialist depth in combustion, pumps and controls as a trust anchor, not a limit.

Frequently Asked Questions

What is the CHICAGO-LATROBE Jobber Length Drill Bit 57221 used for?

This 21/64" black oxide HSS jobber-length drill bit is designed for general-purpose drilling in metal, wood, and plastic. Its 118° split point reduces walking and improves cutting efficiency, making it suitable for maintenance, fabrication, and production environments.

What are the specifications of the CHICAGO-LATROBE 57221 drill bit?

The CHICAGO-LATROBE 57221 is a jobber-length drill bit with a 21/64" diameter (0.3281 inches), 118° split point, and black oxide high-speed steel construction. It is designed for general-purpose drilling and is manufactured under part number 57221.

Where to buy CHICAGO-LATROBE 57221 drill bits worldwide?

3G Electric supplies CHICAGO-LATROBE 57221 drill bits worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this general-purpose jobber-length drill bit for your operations.

How to select the right jobber-length drill bit for metal drilling?

For metal drilling, choose a high-speed steel bit with a split point like the CHICAGO-LATROBE 57221 to reduce walking. Match the diameter to your hole size and ensure the bit is sharp. Use proper cutting fluid and speed settings based on the material hardness for best results.

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 general purpose 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.

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