Keo 906-000-120 Combo Drill Countersink Size 5 Hss

Product Description

The KEO 906-000-120 is a combination drill and countersink tool machined from high-speed steel with a bright, uncoated finish. It handles drilling and countersinking in a single operation, reducing tool changes and setup time on the bench or machine. The body measures 7/16 inches in diameter with a 3/16-inch drill point and an overall length of 2-3/4 inches. The 118-degree drill point angle is standard for general-purpose metal work, and the 60-degree included angle suits common flat-head fastener countersinking. This tool is used by machinists, tool-and-die workers, and fabricators working in production and job-shop environments.

This combo drill countersink is suited for light to medium-duty countersinking applications on steel, aluminum, and similar metals. The double-end style delivers two usable cutting ends, extending tool life before replacement is needed. The plain cutting edge and right-hand cut make it compatible with standard drill presses, CNC lathes, and manual turning equipment. It is a size 5 trade size tool intended for center drilling and countersinking operations where consistent fastener seat geometry is required.

Key Features

• High-speed steel construction provides hardness and wear resistance for metal cutting
• Bright, uncoated finish for use across a range of standard metalworking applications
• Double-end design extends usable tool life between replacements
• 118-degree drill point angle suits general-purpose center drilling in ferrous and non-ferrous metals
• 60-degree included angle matches standard flat-head fastener countersink geometry
• Right-hand cut compatible with conventional drilling equipment and CNC setups

Compatibility

Designed as an OEM-style replacement or direct-use combo drill countersink for standard drill presses, manual lathes, and CNC turning centers accepting 7/16-inch body diameter center drill tools.

Installation Notes

This tool should be installed and operated by qualified machinists familiar with rotating cutting tool safety. Secure the tool firmly in the appropriate collet or chuck before starting the machine, and confirm the spindle is at a full stop before changing tooling. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish quality. Follow shop safety protocols and applicable OSHA general industry standards for machine operation.