Hertel H-81154L06050 Combo Drill Countersink Size 6

Product Description

The HERTEL H-81154L06050 is a combination drill and countersink tool designed to drill a pilot hole and create a countersink recess in a single operation. Built from high-speed steel with a bright, uncoated finish, it features a 0.5 inch body diameter, a 7/32 inch drill point diameter, and an 82-degree included angle for countersinking. The drill point angle is 118 degrees, consistent with standard twist drill geometry. At 5 inches overall length, this is classified as a long-length tool, providing reach in deeper or obstructed work setups. It is installed by machinists, maintenance technicians, and metalworking tradespeople requiring clean, accurate countersunk holes for flathead fasteners.

This tool is suited for metalworking applications where a trade size 6 countersink is required alongside a 7/32 inch pilot hole. The double-end type and plain cutting edge style make it appropriate for use in drill presses, CNC machines, or handheld power drills on ferrous and non-ferrous metals. Its long-length designation extends reach for recessed or hard-to-access drilling locations. The tool application is countersinking, making it a direct-use replacement in production, maintenance, and repair environments.

Key Features

• Combination drill and countersink in a single tool — pilot hole and countersink in one pass
• High-speed steel construction for durability across ferrous and non-ferrous materials
• 82-degree included angle for standard flathead fastener countersinking
• 118-degree drill point angle matches standard twist drill geometry
• Long-length design at 5 inches OAL for extended reach applications
• Bright uncoated finish — no coating to chip or flake during use

Compatibility

Designed for use as a trade size 6 combo drill countersink in standard drill chucks and CNC toolholders accommodating a 0.5 inch body diameter.

Installation Notes

This tool is used by machinists and metalworking tradespeople in drill press, milling machine, or handheld power drill applications. Secure the tool firmly in a chuck or collet rated for the 0.5 inch body diameter before operation. Ensure the workpiece is clamped or fixtured to prevent movement during drilling. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality.