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KEO Countersink: 90°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank - Fast-Cutting Single-Flute Countersinks
KEOFast-Cutting Single-Flute Countersinks

KEO Countersink: 90°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank

The KEO Countersink: 90° is a fast-cutting single-flute countersink, model 55721-TiALN, made of TiAlN coated carbide. It features a 3/16 in body diameter and a 3/16 in shank, designed for precision deburring and…

SKU 3G-OTH-185490

Brand
KEO
Item
Countersink: 90°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank
Category
Fast-Cutting Single-Flute Countersinks
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Technical Specifications

KEO
Manufacturer Part Number
55721-TiALN
Type
TiAlN Coated Carbide
Flute
1
Shank
3/16 in
Body Dia
3/16 in
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KEO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The KEO Countersink: 90° is a fast-cutting single-flute countersink, model 55721-TiALN, made of TiAlN coated carbide. It features a 3/16 in body diameter and a 3/16 in shank, designed for precision deburring and countersinking operations.

Frequently Asked Questions

What is the KEO 55721-TiALN countersink used for?

The KEO 55721-TiALN is a 90°, single-flute countersink used for deburring and chamfering holes in metal, plastic, or composite materials. Its TiAlN coating extends tool life on abrasive or high-temperature alloys. Common in aerospace, automotive, and general machining applications.

What are the specifications of the KEO 55721-TiALN countersink?

This KEO countersink has a 90° included angle, 1 flute, 3/16 in body diameter, and 3/16 in shank diameter. It is made from TiAlN-coated carbide. The manufacturer part number is 55721-TiALN. It is designed for fast cutting and clean finishes in CNC or manual operations.

Where to buy the KEO 55721-TiALN countersink worldwide?

3G Electric supplies the KEO 55721-TiALN 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 genuine KEO tooling for manufacturing and maintenance operations.

How to select the right KEO countersink for your application?

Select a KEO countersink based on hole angle (90° for standard fasteners), material (TiAlN coating for hard metals), and shank size matching your toolholder. Single-flute designs like the 55721-TiALN suit fast chip evacuation. For softer materials, uncoated HSS may suffice. Always match RPM to tool diameter.

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 fast-cutting single-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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