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CHICAGO-LATROBE #20 Left-Hand High-Speed Steel Jobber-Length Drill Bit - Left-Hand High-Speed Steel Jobber-Length Drill Bits
CHICAGO-LATROBELeft-Hand High-Speed Steel Jobber-Length Drill Bits

CHICAGO-LATROBE #20 Left-Hand High-Speed Steel Jobber-Length Drill Bit

CHICAGO-LATROBE Left-Hand High-Speed Steel Jobber-Length Drill Bits.

SKU 3G-OTH-235728

Brand
CHICAGO-LATROBE
Item
#20 Left-Hand High-Speed Steel Jobber-Length Drill Bit
Part Number
44490
Category
Left-Hand High-Speed Steel Jobber-Length Drill Bits
Available to Order
Also known as:44490CHICAGO-LATROBE
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
44490

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

Product Description

CHICAGO-LATROBE Left-Hand High-Speed Steel Jobber-Length Drill Bits.

Frequently Asked Questions

What is a Chicago-Latrobe #20 left-hand jobber drill bit used for?

A Chicago-Latrobe #20 left-hand jobber drill bit is used for drilling holes in metal, particularly for screw extraction or applications where reverse rotation prevents bit walking. It suits maintenance, toolmaking, and production environments requiring precise 0.1610-inch holes.

What are the specifications of the Chicago-Latrobe 44490 drill bit?

The Chicago-Latrobe 44490 is a #20 jobber length drill bit with a 0.1610-inch diameter, 118° point angle, and high-speed steel construction. It features a left-hand spiral for reverse-rotation drilling. This MPN 44490 bit is designed for general-purpose metal drilling.

Where to buy Chicago-Latrobe 44490 drill bits worldwide?

3G Electric supplies Chicago-Latrobe 44490 left-hand drill bits worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote on this MPN 44490 bit and other cutting tools.

How to select the correct left-hand drill bit for screw extraction?

To select a left-hand drill bit for screw extraction, match the bit diameter to the screw's minor thread diameter. A Chicago-Latrobe #20 (0.1610 inch) bit works for small fasteners. Use a slow speed with steady pressure to avoid breakage. Always wear safety glasses.

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 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.

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Left-hand high-speed steel jobber-length drill bit with a 118° point angle and #6 wire gauge size (0.2040 in diameter). Designed for reverse rotation drilling, commonly used to remove broken bolts or screws in metal. Suitable for general-purpose drilling in steel, aluminum, and other alloys
CHICAGO-LATROBE
Left-hand high-speed steel jobber-length drill bit with a 118° point angle and #6 wire gauge size (0.2040 in diameter). Designed for reverse rotation drilling, commonly used to remove broken bolts or screws in metal. Suitable for general-purpose drilling in steel, aluminum, and other alloys

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