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KEO Countersink: 60°, 6 Flute, 2 1/2 in Body Dia, 1 in Shank - Smooth-Finish Six-Flute Countersinks
KEOSmooth-Finish Six-Flute Countersinks

KEO Countersink: 60°, 6 Flute, 2 1/2 in Body Dia, 1 in Shank

SKU 3G-OTH-188203

Brand
KEO
Item
Countersink: 60°, 6 Flute, 2 1/2 in Body Dia, 1 in Shank
Category
Smooth-Finish Six-Flute Countersinks
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Technical Specifications

KEO
Manufacturer Part Number
55516
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KEO Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the KEO 55516 countersink used for?

The KEO 55516 is a 60° six-flute countersink designed for producing smooth, burr-free chamfers on drilled holes in metal. It is commonly used in machining, tool and die, and aerospace applications where a fine surface finish is required on steel, stainless steel, and other alloys.

What are the specifications of the KEO 55516 countersink?

The KEO 55516 is a 60° countersink with six flutes, a 2 1/2 in body diameter, and a 1 in shank. It is made from cobalt steel for heat resistance and durability. The manufacturer part number is 55516, and it is designed for smooth-finish applications in industrial metalworking.

Where to buy the KEO 55516 countersink worldwide?

You can source the KEO 55516 countersink through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide reliable sourcing for this KEO tool.

How to select the correct KEO countersink for your application?

Select a KEO countersink based on the required chamfer angle (e.g., 60° for standard screw heads), material hardness (cobalt for tough alloys), and hole size. The 55516 with a 2 1/2 in body suits larger holes. Match shank diameter to your tool holder and ensure flute count matches finish needs.

Used in

Common applications for KEO
Metalworking — KEO plain-tip center drills for creating accurate starting points in lathe operations
Automotive manufacturing — KEO bell-tip center drills for countersinking holes in engine components
Aerospace machining — KEO radius-tip center drills for reducing stress risers in critical parts
General machining — KEO keyseat cutters for milling keyways in shafts and gears
Tool and die making — KEO TiN-coated center drills for extended tool life in hardened steels
Precision engineering — KEO cobalt center drills for high-temperature alloy applications

KEO Products

3G Electric supplies KEO smooth-finish six-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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