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Frequently Asked Questions
What is the KEO 90° 4-flute countersink used for?
The KEO 90° 4-flute countersink is used to create a conical recess for flat-head screws in metalworking and machining applications. Its 90° angle and cobalt construction suit hardened steels and stainless steel, providing clean, chatter-free countersinking in industrial manufacturing and maintenance.
What are the specifications of the KEO countersink 919-000-539?
The KEO countersink model 919-000-539 has a 90° included angle, 4 flutes, and a 1/2 in body diameter. It is made from cobalt steel for heat resistance and durability. The brand is KEO, and the part number is 919-000-539. It is designed for machine use in metalworking.
Where to buy the KEO 90° countersink worldwide?
You can source the KEO 90° countersink worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine KEO cutting tools to industrial buyers internationally.
How to select the correct KEO countersink for your application?
To select the correct KEO countersink, match the angle (90° for flat-head screws) and body diameter to your fastener size. Choose cobalt for hard materials like stainless steel. Ensure the shank fits your machine tool holder. For general steel, high-speed steel may suffice, but KEO cobalt offers longer life in tough alloys.
Used in
Common applications for KEOKEO Products
3G Electric supplies KEO four-flute machine countersinks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
