Hertel H-81186060600 Combo Drill Countersink Cobalt

Product Description

The HERTEL H-81186060600 is a combo drill countersink designed to drill a pilot hole and countersink in a single pass. Built from cobalt tool steel with a bright, uncoated finish, this tool handles harder metals and abrasive materials where standard high-speed steel bits wear quickly. The body measures 1/2 inch in diameter with a 6-inch overall length, making it a long-length tool suited for deep-reach applications. The 7/32-inch drill point runs at a 118-degree point angle, and the included countersink angle is 60 degrees. Licensed HVAC technicians, machinists, and metal fabricators working with sheet metal panels, electrical enclosures, or mechanical assemblies will find this a reliable single-step solution.

This combo drill countersink is used in metal fabrication, HVAC panel work, electrical enclosure assembly, and general industrial applications where a flush or recessed fastener seat is required. The double-end cutting edge style extends usable tool life. The plain cutting edge suits standard countersinking operations in ferrous and non-ferrous metals. It is not configured as an aircraft-style tool and is not tapered, making it straightforward to apply in conventional drill press or handheld drill setups.

Key Features

• Cobalt tool steel construction for improved heat and wear resistance over standard HSS
• Bright, uncoated finish provides consistent chip flow and dimensional accuracy
• 118-degree drill point angle for general-purpose metal drilling
• 60-degree included countersink angle for standard flat-head fastener seating
• Double-end design extends service life before replacement is needed
• Long-length body at 6 inches overall for deep-reach drilling scenarios

Compatibility

Designed as an OEM-style replacement or standard tooling addition for combo drill countersink applications in size 6, compatible with conventional drill presses and handheld power drills accepting a 1/2-inch body diameter tool.

Installation Notes

This tool is installed and operated by machinists, metal fabricators, and trade professionals using drill presses or variable-speed handheld drills. Secure the workpiece before operation and use appropriate cutting fluid when drilling harder ferrous metals to extend tool life and maintain dimensional accuracy. Always wear appropriate PPE including eye protection when operating rotary cutting tools. Inspect the cutting edges before each use and remove the tool from service if chipping or excessive wear is observed.