Keo 919-000-965 Countersink 1-1/4 in 90 Deg Solid Carbide

Product Description

The KEO 919-000-965 is a single-flute solid carbide countersink designed for chamfering, countersinking, and deburring operations in metalworking and machining applications. It features a 1-1/4 inch head diameter, a 90-degree included angle, and a 3/4 inch shank diameter, giving it a rigid, precise profile suited for production and toolroom use. The solid carbide construction delivers superior hardness and wear resistance compared to high-speed steel alternatives, making it well suited for harder workpiece materials and extended run cycles. Overall length is 3.25 inches, and the tool weighs 0.33 pounds.

This countersink is intended for use in drill presses, CNC machining centers, and manual mills where a clean, consistent chamfer or countersink profile is required. The 90-degree included angle accommodates standard fastener-seat geometry common in aerospace, automotive, and general metalworking fabrication. The single-flute design reduces chatter and produces a smooth surface finish on the entry cut. It is typically installed and operated by machinists and tool-and-die professionals working with ferrous and non-ferrous metals.

Key Features

• Solid carbide construction for extended tool life and high wear resistance
• 90-degree included angle suits standard countersunk fastener geometry
• Single-flute design minimizes chatter and improves surface finish
• 1-1/4 inch maximum cutting diameter handles larger fastener seat profiles
• 3/4 inch shank diameter provides secure, rigid toolholder engagement
• Suitable for chamfering, countersinking, and deburring in a single tool

Compatibility

Designed as an OEM-style single-flute carbide countersink compatible with standard toolholders and collet chucks accepting a 3/4 inch straight shank.

Installation Notes

Installation and operation should be performed by qualified machinists. Secure the 3/4 inch shank firmly in a collet chuck or end mill holder rated for the shank diameter before use. Ensure the machine spindle is fully stopped and locked out before mounting or removing the tool. Carbide tooling is brittle and should not be dropped or subjected to side impacts during handling or storage.