Hertel H-81155060000 Combo Drill Countersink Size 6 Hss

Product Description

The HERTEL H-81155060000 is a combination drill and countersink designed to drill a pilot hole and create a countersunk seat in a single operation. Built from high-speed steel with a bright, uncoated finish, it is sized for a No. 6 fastener with a 0.5-inch body diameter and a 7/32-inch drill point diameter. The 118-degree drill point angle provides a clean entry into steel, aluminum, wood, and composite materials. The 90-degree included angle on the countersink portion is the standard for flat-head fastener seating. At 3 inches overall length, the tool fits standard drill chucks and drill press setups used in machining, fabrication, and maintenance trades.

This combo drill countersink is suited for bench-top drill press work, hand-drill applications, and CNC drilling operations where a pilot hole and countersink are required simultaneously. Typical applications include preparing holes for No. 6 flat-head machine screws and wood screws in metal fabrication, woodworking, and general maintenance. The double-end style and plain cutting edge style make it compatible with a wide range of materials and setups. It is a single-piece consumable tool used by machinists, fabricators, and maintenance technicians.

Key Features

• High-speed steel construction for durability across metal, wood, and composite materials
• 118-degree drill point angle for standard center-cutting performance
• 90-degree included countersink angle for flat-head fastener seating
• 0.5-inch body diameter sized for No. 6 fasteners
• Bright uncoated finish for general-purpose use
• Double-end type with plain cutting edge style

Compatibility

Designed as a standard No. 6 trade-size combo drill countersink for use with drill presses, hand drills, and CNC machines accepting 0.5-inch body diameter tooling.

Installation Notes

This tool is installed in a standard drill chuck or collet by a machinist or fabricator. Secure the body firmly in the chuck before operation and verify the spindle speed is appropriate for the workpiece material. Always secure the workpiece before drilling. Wear appropriate eye protection and follow applicable shop safety standards when operating rotating cutting tools.