KEO Countersink: 110°, 1 Flute, 3/8 in Body Dia

A KEO 110° countersink is used to create a conical recess in a workpiece, typically for flat-head screws or rivets. The 110° angle is common in aerospace and sheet-metal applications. This single-flute, high-speed steel design provides fast, chatter-free cutting in ferrous and non-ferrous materials.

The KEO 53381 is a 110° single-flute countersink with a 3/8 in body diameter, made from high-speed steel. It is designed for fast cutting and clean finishes. The 1-flute geometry reduces vibration and improves chip evacuation. This tool is suitable for general industrial deburring and countersinking tasks.

3G Electric supplies KEO countersinks like the 53381 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial sourcing partner, we provide genuine KEO tooling and can quote for bulk or single-piece orders. Contact us for pricing and lead time.

Select the countersink angle that matches your fastener head angle — 82° for standard flat-head screws, 90° for metric, and 110° for aerospace or sheet-metal screws. The KEO 110° single-flute countersink is ideal for thin materials where a shallow, wide recess is needed. Always match tool material to workpiece hardness.