KEO Countersink: 110°, 6 Flute, 3/16 in Body Dia, 3/16 in Shank
SKU 3G-OTH-188340
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Frequently Asked Questions
What is the KEO 55581 countersink used for?
The KEO 55581 is a 110° six-flute countersink designed for creating smooth, burr-free chamfers on drilled holes in metal. It is commonly used in machining and fabrication for deburring and countersinking screw holes, especially in cobalt-alloy and hardened materials.
What are the specifications of the KEO 55581 countersink?
The KEO 55581 has a 110° included angle, six flutes, a 3/16 in body diameter, and a 3/16 in shank. It is made from cobalt steel for heat resistance and durability. The manufacturer part number is 55581, and it is a smooth-finish countersink from KEO.
Where to buy the KEO 55581 countersink worldwide?
3G Electric supplies the KEO 55581 countersink worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this KEO tool to any country.
How to select the correct KEO countersink for my application?
Select a KEO countersink based on hole size, material, and desired finish. For hard metals like stainless steel, choose cobalt steel fluted designs such as the 55581. Match the body diameter to your hole size and ensure the shank fits your tool holder. Consult KEO's catalog for angle and flute count recommendations.
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Common applications for KEOKEO 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.


