KEO Countersink: 120°, 1 Flute, 1 3/4 in Body Dia, 3/4 in Shank

The KEO 120° countersink is used to create a conical recess for flat-head screws in metalworking. Its single-flute cobalt design cuts quickly in hardened steels and alloys, making it ideal for tool and die shops, aerospace maintenance, and precision fabrication where a 120° included angle is required.

This KEO countersink has a 120° included angle, 1 flute, 1 3/4 in body diameter, and 3/4 in shank diameter. It is made from cobalt steel for heat resistance and durability. The manufacturer part number is 919-000-689, and it is designed for fast cutting in ferrous materials.

3G Electric supplies the KEO 919-000-689 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 and deliver this cobalt single-flute countersink to any country.

Select the KEO countersink based on the screw head angle—120° for flat-head screws—and material hardness. Cobalt is best for tough alloys. Match the body diameter to the screw head size and ensure the shank fits your tool holder. For high-speed production, a single-flute design like this KEO model provides fast chip evacuation.