KEO Countersink: 90°, 6 Flute, 3 in Body Dia, 1 in Shank

A KEO 6-flute countersink creates a smooth, chatter-free 90° chamfer around drilled holes in metal. It is commonly used in machining and fabrication to deburr edges and prepare holes for flat-head screws. The cobalt construction provides heat resistance for extended tool life in industrial applications.

The KEO countersink model 55557 has a 90° angle, 6 flutes, a 3-inch body diameter, and a 1-inch shank. It is made from cobalt for durability in hard materials. This smooth-finish design reduces vibration and delivers a clean, consistent chamfer in production environments.

3G Electric supplies the KEO countersink 55557 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine KEO tooling and support your procurement with technical expertise across 14 industrial departments.

Select a KEO countersink based on hole size, material hardness, and desired finish. For steel or stainless steel, choose cobalt or carbide flutes. Match the body diameter to your hole depth and the shank to your tool holder. A 6-flute design like the 55557 minimizes chatter on production runs.