Keo 919-000-949 Carbide Countersink 1/8 in 90 Degree

Product Description

The KEO 919-000-949 is a single-flute solid carbide countersink designed for chamfering, countersinking, and deburring operations in precision machining and fabrication work. The tool features a 1/8-inch head diameter and a 90-degree included angle, making it suited for producing clean, accurate countersunk profiles in a variety of workpiece materials. With a 1/8-inch shank diameter and an overall length of 1.5 inches (38 mm), this is a compact tool built for tight-clearance applications where control and precision matter. Machinists, toolmakers, and fabricators working on small-diameter fastener seats or edge prep operations will find this tool fits standard 1/8-inch collet and chuck setups.

This countersink is appropriate for use in manual mills, CNC machining centers, drill presses, and hand-held pneumatic or electric spindle tools where a 1/8-inch shank is accepted. It is well suited for deburring small-diameter drilled holes, creating fastener lead-ins, and chamfering edges on metal, composite, or plastic components. The single-flute geometry provides clean chip evacuation and reduces chatter in precise, low-feed finishing passes. This tool is commonly used in aerospace, automotive, and general metalworking shops handling small-scale or detail work.

Key Features

• Solid carbide construction for extended tool life and wear resistance
• 90-degree included angle suits standard fastener countersink profiles
• Single-flute design promotes clean chip flow and reduces vibration
• 1/8-inch head diameter and 1/8-inch shank for compact, tight-clearance use
• Overall length of 1.5 inches supports use in confined workholding setups
• Suitable for chamfering, countersinking, and deburring in a single tool

Compatibility

Designed for use in any spindle, collet, or chuck accepting a 1/8-inch shank. Compatible with standard 1/8-inch ER collet systems, Jacobs-style drill chucks, and similar toolholding systems used on mills, drill presses, and CNC machining centers.

Installation Notes

This tool is installed and serviced by machinists and toolroom technicians. Before changing or setting the tool, ensure the spindle is fully stopped and the machine is in a safe, locked-out state per applicable shop safety procedures. Secure the shank firmly in the collet or chuck to the manufacturer-specified clamping method to prevent pullout during operation. Use appropriate cutting speeds and feeds for the workpiece material - do not force the tool or use it as a drill to start holes from solid stock.