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CHICAGO-LATROBE General Purpose Three-Flute Countersink - General Purpose Three-Flute Countersinks
CHICAGO-LATROBEGeneral Purpose Three-Flute Countersinks

CHICAGO-LATROBE General Purpose Three-Flute Countersink

The CHICAGO-LATROBE Countersink is a general purpose three-flute countersink with an 82° angle, featuring a 1/2 in body diameter and constructed from black oxide high speed steel (MPN 56840).

SKU 3G-OTH-184755

Brand
CHICAGO-LATROBE
Item
General Purpose Three-Flute Countersink
Part Number
56840
Category
General Purpose Three-Flute Countersinks
Available to Order
Also known as:56840CHICAGO-LATROBE
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
56840
Type
Black Oxide High Speed Steel
Flute
3
Body Dia
1/2 in

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

Product Description

The CHICAGO-LATROBE Countersink is a general purpose three-flute countersink with an 82° angle, featuring a 1/2 in body diameter and constructed from black oxide high speed steel (MPN 56840).

Frequently Asked Questions

What is the CHICAGO-LATROBE 56840 countersink used for?

The CHICAGO-LATROBE 56840 is a general-purpose three-flute countersink used to create 82° chamfered holes in metal, wood, or plastic. It deburrs drilled holes and prepares surfaces for flathead screws. Common in automotive, aerospace, and general fabrication shops.

What are the specifications of the CHICAGO-LATROBE 56840 countersink?

The CHICAGO-LATROBE 56840 has a 1/2 in body diameter, 82° included angle, three flutes, and is made from black oxide high-speed steel. The manufacturer part number is 56840. It is designed for general-purpose countersinking in ferrous and non-ferrous materials.

Where to buy the CHICAGO-LATROBE 56840 countersink worldwide?

3G Electric supplies the CHICAGO-LATROBE 56840 countersink worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time. We source and deliver this item to any country.

How to select the correct CHICAGO-LATROBE countersink for my application?

Select a countersink with the same angle as your fastener (82° for standard flathead screws). Match the body diameter to the screw head size. For harder materials, choose black oxide high-speed steel like the CHICAGO-LATROBE 56840. Three-flute designs reduce chatter and produce smoother finishes.

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 three-flute countersinks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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