Hertel H-81105506000 Combo Drill Countersink Size 6

Product Description

The HERTEL H-81105506000 is a combination drill and countersink designed for metalworking applications requiring a pilot hole and countersink in a single pass. Built from cobalt high-speed steel, this tool delivers heat and wear resistance suited for harder ferrous materials. The body measures 1/2 inch in diameter with a 7/32 inch drill point diameter and a 3 inch overall length. The 118-degree drill point angle is a standard geometry for general-purpose metal drilling. The 60-degree included angle on the countersink matches the most common fastener countersink profiles. Installed by machinists, maintenance techs, and fabricators using standard drill presses or CNC setups.

This combo drill countersink is used in production and maintenance environments where countersinking for flat-head or machine screws is required. It suits ferrous and non-ferrous metals where cobalt tooling is specified for added hardness tolerance. The double-end configuration extends tool life by providing two usable ends. It is sized for trade size 6 fastener applications and is appropriate for manual and CNC drilling setups in shop and field fabrication work.

Key Features

• Cobalt high-speed steel construction for heat resistance in harder materials
• 118-degree drill point angle for standard general-purpose metal drilling
• 60-degree included countersink angle matches common flat-head fastener profiles
• Double-end design provides two usable cutting ends for extended service life
• Bright/uncoated finish with plain cutting edge style
• Single-pass operation drills pilot hole and countersink simultaneously

Compatibility

Designed as a direct-fit combo drill countersink for trade size 6 fastener applications in general metalworking, maintenance, and fabrication settings where cobalt tooling is required.

Installation Notes

This tool is installed by machinists and maintenance technicians in drill press, hand drill, or CNC spindle chucks. Secure the workpiece firmly before operation and set spindle speed appropriate for the material being drilled. Inspect both cutting ends for wear or chipping before use. Do not exceed the tool rated capacity for the material being worked.