Keo 907-000-164 Combo Drill Countersink Size 6 Cobalt

Product Description

The KEO 907-000-164 is a combination drill and countersink designed for simultaneous drilling and countersinking in a single pass. Built from cobalt high-speed steel with a bright uncoated finish, this tool handles tough materials including stainless steel, alloy steel, and other hard metals. It features a 1/2 inch body diameter, a 7/32 inch drill point diameter, a 118-degree drill point angle, and a 60-degree included countersink angle. At 5 inches overall length, it qualifies as a long-length tool and is suited for applications where standard-length tools cannot reach. Right-hand cutting direction is standard for conventional drill press and CNC spindle use.

This combo drill countersink is used in metalworking, fabrication, and maintenance operations where deburring and chamfering are required alongside hole creation. Size 6 trade sizing fits common countersunk fastener applications. The double end type extends tool life by providing two usable ends. It is appropriate for use on drill presses, lathes, milling machines, and CNC machining centers. Machinists, tool-and-die workers, and maintenance technicians working in industrial and commercial settings are the primary users of this tool.

Key Features

• Cobalt high-speed steel construction for heat and wear resistance in hard materials
• 118-degree drill point angle for efficient penetration in ferrous metals
• 60-degree included countersink angle for standard countersunk fastener seating
• Double end design extends usable tool life
• Long-length tool at 5 inches overall length for extended reach applications
• Right-hand cutting direction compatible with standard machine spindles

Compatibility

Designed as an OEM-style replacement or standard tooling option for drill presses, lathes, milling machines, and CNC machining centers requiring a Size 6 combination drill and countersink with a 1/2 inch body diameter.

Installation Notes

Installation is performed by machinists and tooling technicians using standard drill chuck or collet holding systems. Ensure the machine spindle is fully stopped and the tool is securely seated in the holder before beginning any operation. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain cut quality. Follow shop safety protocols and applicable OSHA machine guarding requirements when operating rotating cutting tools.