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CHICAGO-LATROBE Countersink: 90°, 3 Flute, 1/2 in Body Dia - General Purpose Three-Flute Countersinks
CHICAGO-LATROBEGeneral Purpose Three-Flute Countersinks

CHICAGO-LATROBE Countersink: 90°, 3 Flute, 1/2 in Body Dia

SKU 3G-OTH-184756

Brand
CHICAGO-LATROBE
Item
Countersink: 90°, 3 Flute, 1/2 in Body Dia
Category
General Purpose Three-Flute Countersinks
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
56860
Type
Black Oxide High Speed Steel
Flute
3
Body Dia
1/2 in
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Technical Documents

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

Frequently Asked Questions

What is a CHICAGO-LATROBE 3-flute countersink used for?

A CHICAGO-LATROBE 3-flute countersink is used to create a conical recess in a workpiece, typically for countersinking screw or bolt heads flush with the surface. The 90° angle and black oxide high-speed steel construction suit general-purpose deburring and chamfering in metalworking and machining applications.

What are the specifications of the CHICAGO-LATROBE countersink 56860?

The CHICAGO-LATROBE countersink model 56860 has a 1/2 in body diameter, 3 flutes, and a 90° included angle. It is made from black oxide high-speed steel for wear resistance and reduced friction. This general-purpose tool is designed for use in drill presses or handheld drills.

Where to buy CHICAGO-LATROBE countersink 56860 worldwide?

3G Electric supplies the CHICAGO-LATROBE countersink 56860 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this and other cutting tools across 14 industrial departments.

How to select the right countersink for a machining job?

Select a countersink based on the required angle (commonly 82° or 90° for standard fasteners), body diameter matching the screw head size, and material compatibility. For steel, black oxide high-speed steel like CHICAGO-LATROBE offers good chip flow and durability. Match flute count to material hardness for optimal finish.

Used in

Common applications for CHICAGO-LATROBE
Aerospace assembly — Chicago-Latrobe NAS 907 Type B aircraft-extension drill bits for drilling fastener holes in aluminum and titanium skins.
Metal fabrication — Chicago-Latrobe reduced-shank drill bit sets for enlarging holes in structural steel using magnetic drill presses.
Maintenance repair — Chicago-Latrobe left-hand cobalt jobber-length drill bits for removing broken bolts in machinery.
Tool and die making — Chicago-Latrobe jobber-length drill bit sets with 135° split point for precision hole drilling in hardened steels.
Automotive repair — Chicago-Latrobe spiral-flute screw extractors for removing seized fasteners in engine blocks or exhaust systems.
General manufacturing — Chicago-Latrobe HSS jobber-length drill bits for production drilling in mild steel and cast iron.

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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