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CHICAGO-LATROBE 21/64" High-Speed Steel Extended-Length Drill Bit - High-Speed Steel Extended-Length Drill Bits
CHICAGO-LATROBEHigh-Speed Steel Extended-Length Drill Bits

CHICAGO-LATROBE 21/64" High-Speed Steel Extended-Length Drill Bit

The CHICAGO-LATROBE Extra Long Drill Bit (SKU 50741, MPN 50741) is a 21/64" 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-207443

Brand
CHICAGO-LATROBE
Item
21/64" High-Speed Steel Extended-Length Drill Bit
Part Number
50741
Category
High-Speed Steel Extended-Length Drill Bits
Available to Order
Also known as:50741CHICAGO-LATROBE
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
50741
Type
Black Oxide HSS
Overall Lg
12"
Notched Point
118°

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

Product Description

The CHICAGO-LATROBE Extra Long Drill Bit (SKU 50741, MPN 50741) is a 21/64" 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 50741 used for?

This extra-long drill bit is designed for deep-hole drilling in metal, wood, and plastic. Its 12" overall length and 118° notched point allow access to recessed areas and reduce walking on curved surfaces. The black oxide HSS construction provides heat resistance and lubricity for extended tool life in industrial maintenance and fabrication applications.

What are the specifications of the CHICAGO-LATROBE 50741 drill bit?

The CHICAGO-LATROBE 50741 is a 21/64" diameter extra-long drill bit with a 12" overall length. It features a 118° notched point and black oxide high-speed steel (HSS) construction. The bit diameter is 0.3281 inches. This is a high-speed steel extended-length drill bit designed for deep-hole drilling.

Where to buy CHICAGO-LATROBE 50741 drill bits worldwide?

3G Electric supplies the CHICAGO-LATROBE 50741 extra-long drill bit to customers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this part for your deep-hole drilling needs.

How to select the right extra-long drill bit for deep-hole drilling?

Select an extra-long drill bit based on hole depth, material, and required finish. For steel, use a 118° point with black oxide HSS like the CHICAGO-LATROBE 50741. Ensure overall length exceeds hole depth by at least 1 inch. Use peck drilling cycles to clear chips and reduce heat buildup during operation.

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 extended-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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This high-speed steel drill bit features a black oxide finish for heat resistance and chip evacuation. The 12" overall length and 118° notched point enable deep-hole drilling in metal, wood, and plastic, with reduced walking on curved surfaces. Suitable for accessing recessed areas in industrial maintenance and fabrication
CHICAGO-LATROBE
This high-speed steel drill bit features a black oxide finish for heat resistance and chip evacuation. The 12" overall length and 118° notched point enable deep-hole drilling in metal, wood, and plastic, with reduced walking on curved surfaces. Suitable for accessing recessed areas in industrial maintenance and fabrication

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