Hertel 18273 Countersink 1/2 in 60 Degree 1 Flute Hss

Product Description

The HERTEL 18273 is a single-flute countersink designed for creating clean, accurately angled seat profiles in metal and other hard materials. Built from high speed steel (HSS), it delivers consistent cutting performance across production and maintenance applications. The 60-degree included angle suits specific fastener-seat geometries where a shallower profile is required. With a 0.5 inch head diameter and a matching 0.5 inch straight cylindrical shank, the tool mounts directly in standard drill chucks or collet holders without adapters. Machinists, tool-and-die technicians, and maintenance mechanics use this style of countersink for deburring drilled holes and preparing fastener seats on structural components and assemblies.

The HERTEL 18273 is suited for bench drilling, drill press work, and CNC operations where a straight-shank countersink is specified. The single-flute geometry reduces chatter on interrupted cuts and delivers a smooth finish in steel, aluminum, brass, and similar materials. It is appropriate for light industrial production, MRO maintenance tasks, and precision fabrication environments requiring controlled countersink depth and angle.

Key Features

• 60-degree included angle for specific fastener-seat and deburring applications
• Single-flute design minimizes chatter and produces a smooth seat finish
• High speed steel construction provides hardness and wear resistance for metal cutting
• 0.5 inch straight cylindrical shank fits standard drill chucks and collet holders
• 0.5 inch head diameter suited for common hole and fastener sizes

Compatibility

Designed as a straight-shank countersink compatible with standard drill chucks, collet holders, and tool holders accepting a 0.5 inch cylindrical shank across bench drills, drill presses, and CNC machining centers.

Installation Notes

Installation is performed by machinists or maintenance technicians with standard drill press or machining equipment. Secure the straight shank fully in a properly sized chuck or collet before operation and verify runout before cutting. Always power down and lock out the machine before changing or adjusting the tool. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality.