Keo 902-000-063 Solid Pilot Counterbore 18mm 3 Flutes

Product Description

The KEO 902-000-063 is a solid pilot counterbore designed for precision spotfacing and counterboring operations in metal fabrication and machining applications. Built from cobalt steel with a bright, uncoated finish, it delivers reliable performance in tough materials where heat resistance matters. The tool features an 18 mm counterbore diameter, an 11 mm standard pilot diameter, and three flutes for efficient chip evacuation. It is sized for M10 socket-head cap screws and is a direct-fit option for machinists, toolmakers, and maintenance technicians working on structural and mechanical assemblies.

This counterbore is suited for use in manual mills, drill presses, and CNC machining centers where accurate seat depth and clean counterbore profiles are required. It is a standard pilot configuration, making it appropriate for new hole applications and clean-bore rework. The cobalt steel construction makes it a practical choice when working with stainless steel, alloy steels, and other hard or abrasive workpiece materials. Applications span industrial maintenance, OEM part production, and general job-shop work.

Key Features

• Cobalt steel construction for improved heat and wear resistance in hard materials
• 18 mm counterbore diameter sized for M10 socket-head cap screw seating
• Standard 11 mm pilot diameter for positive hole alignment
• Three-flute design promotes efficient chip removal and smooth cutting action
• Bright, uncoated finish suitable for use with a wide range of cutting fluids
• 12.5 mm shank diameter for secure chuck or collet retention

Compatibility

Designed for use with M10 socket-head cap screws. Compatible with standard drill press, manual mill, and CNC spindle setups accepting a 12.5 mm shank. Fastener size compatibility is 10 mm per manufacturer specifications.

Installation Notes

Installation and operation should be performed by qualified machinists or toolroom personnel following standard machine shop safety practices. Secure the workpiece firmly before cutting, and confirm the pilot fits the existing hole cleanly before applying feed pressure to avoid pilot or bore damage. Use an appropriate cutting fluid for the workpiece material, particularly when cutting stainless or alloy steel. Inspect the pilot and cutting edges for wear before each use.