Keo 906-000-135 Combo Drill Countersink Size 6 Hss

Product Description

The KEO 906-000-135 is a combination drill and countersink designed to drill a pilot hole and countersink in a single operation. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent performance on ferrous and non-ferrous materials. The tool features a 0.5 inch body diameter, a 7/32 inch drill point diameter, a 118-degree drill point angle, and a 60-degree included angle for countersinking. At 3 inches overall length, it fits standard drill chucks and milling machine setups. Machinists and fabricators use this type of tool to prepare holes for flat-head fasteners without changing tools between operations.

This combo drill countersink is suited for general-purpose machining applications in job shops, production environments, and metal fabrication. It is appropriate for use in drill presses, milling machines, and CNC setups. The right-hand cut direction and plain cutting edge style make it a straightforward fit for conventional drilling operations on steel, aluminum, and similar workpiece materials. The size 6 designation indicates the trade-standard sizing for this tool class.

Key Features

• Combination drill and countersink performs pilot drilling and countersinking in one pass
• High-speed steel construction provides hardness and wear resistance for metal cutting
• Bright, uncoated finish for general-purpose use across a range of materials
• 118-degree drill point angle with 60-degree included countersink angle
• Right-hand cut, plain cutting edge, non-tapered double-end style
• 3 inch overall length fits standard machine tool chucks and collets

Compatibility

Designed as a standard trade-size 6 combination drill countersink suitable for use in drill presses, milling machines, and CNC machining centers that accept 0.5 inch body diameter tooling.

Installation Notes

This tool is installed and operated by machinists and metal fabricators using standard machine tool setups. Secure the tool firmly in the chuck or collet before operation and verify runout is within acceptable limits. Use appropriate cutting fluid or lubricant for the workpiece material to extend tool life. Power down and de-energize the machine before changing tooling or inspecting the cutting edges.