Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is the KEO 82° countersink used for?
The KEO 82° countersink is used to create a conical recess for flat-head screws in metalworking. Its 4-flute design provides smooth cutting and chip evacuation. Common applications include aerospace, automotive, and general machining where precise countersinking is required.
What are the specifications of the KEO 4-flute countersink?
The KEO countersink has an 82° included angle, 4 flutes, and a 5/8 in body diameter. It is made from cobalt steel for heat resistance and durability. The manufacturer part number is 919-000-531. This tool is designed for machine use in drill presses or CNC equipment.
Where to buy KEO countersinks worldwide?
You can source the KEO 82° 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 on this cobalt steel countersink.
How to select the correct KEO countersink size?
Select the KEO countersink based on the screw head angle and body diameter. For flat-head screws, use an 82° countersink. The 5/8 in body diameter suits medium-sized holes. Ensure the tool matches your material—cobalt steel is ideal for harder metals like stainless steel.
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.















