Hertel H-81154010000 Combo Drill Countersink Size 1

Product Description

The HERTEL H-81154010000 is a combo drill countersink designed to drill a pilot hole and countersink in a single pass. Built from high-speed steel with a bright, uncoated finish, this tool handles both operations simultaneously, reducing setup time and tool changes on the bench or in the field. The body diameter is 0.125 inches (1/8 inch), the drill point diameter is 0.047 inches (3/64 inch), and the overall length is 1.25 inches. It features an 82-degree included angle and a 118-degree drill point angle, making it suited for standard flat-head fastener seating. This is a plain cutting-edge, non-tapered, double-end style tool with no insertable cutter head.

This combo drill countersink is used in light metalworking, woodworking, and assembly applications where a size 1 trade-size tool is specified. The double-end design extends tool life by offering two usable ends before replacement. It is a common choice for technicians and tradespeople who need a compact, efficient countersinking solution in tight workspaces or for small-fastener applications. The UNSPSC code for this item is 23241603.

Key Features

• Combo drill and countersink in a single tool - drills pilot hole and seats flat-head fasteners in one step
• High-speed steel construction for durability across metal, wood, and composite materials
• Bright, uncoated finish - no coating to flake or interfere with tight tolerances
• Double-end design extends usable tool life
• 82-degree included angle for standard flat-head countersink geometry
• 118-degree drill point angle for clean entry on common materials

Compatibility

Designed as a standard trade size 1 combo drill countersink suitable for applications requiring a 0.125-inch body diameter and 3/64-inch drill point in general metalworking and assembly operations.

Installation Notes

This tool is installed in a compatible drill chuck or drill press rated for the shank size. Secure the workpiece before operation and use appropriate eye protection. Ensure the chuck is fully tightened before running the tool at speed. Follow applicable shop safety standards and manufacturer speed recommendations for high-speed steel tooling on the material being worked.