Hertel H-81154L06040 Combo Drill Countersink Size 6 Hss

Product Description

The HERTEL H-81154L06040 is a combination drill and countersink designed for simultaneous drilling and countersinking in a single operation. Built from high speed steel with a bright polished finish, this tool accepts a size 6 screw and features a 7/32 inch drill point diameter with a matching 7/32 inch drill point length. The 82-degree included angle is suited for standard flat-head fastener seating. With a 4 inch overall length and 1/2 inch body diameter, this is a long-length tool that provides added reach in deeper workpiece applications. It is a non-tapered, plain cutting edge design with no insertable cutter head.

This combo drill countersink is used in metalworking, fabrication, and maintenance applications where countersunk holes are required for flush-mount fasteners. The double end type extends tool life by providing two usable ends. Typical users include machinists, millwrights, and maintenance technicians working on ferrous and non-ferrous materials. The 118-degree drill point angle is a standard configuration suited for general-purpose drilling into steel, aluminum, and similar materials before countersinking.

Key Features

• Size 6 trade size with 1/2 inch body diameter for secure chuck grip
• High speed steel construction for durability in general metalworking
• Bright polished finish reduces friction and aids chip evacuation
• 82-degree included angle matches standard flat-head fastener geometry
• Double end design extends usable tool life
• Long-length tool at 4 inches overall for added reach

Compatibility

Designed as an OEM-style replacement or standard tooling option for drill presses, milling machines, and hand-held power tools accepting a 1/2 inch shank, where size 6 countersinking is required.

Installation Notes

This tool is installed by machinists or maintenance technicians in a drill press, mill, or compatible hand-held power tool with a 1/2 inch chuck or collet. Always secure the workpiece firmly before operation and confirm the spindle is at a full stop before changing tooling. Use appropriate cutting fluid for the material being worked to extend tool life and improve finish quality. Follow applicable shop safety standards when operating rotary cutting tools.