Hertel 334-005090 Countersink 3/8 in 120 Deg 4 Flute Carbide

Product Description

The HERTEL 334-005090 is a solid carbide countersink designed for deburring, chamfering, and countersinking operations in metal, plastic, and composite materials. It features a 3/8-inch head diameter and a 120-degree included angle, making it well suited for standard fastener seat preparation. The straight cylindrical shank measures 1/4 inch in diameter for consistent tool holder grip. Four flutes provide a balance of chip evacuation and surface finish quality. This tool is used by machinists, tool and die makers, and maintenance technicians working with manual or CNC drilling equipment.

This countersink is appropriate for light to medium-duty shop work where a clean, accurate chamfer or countersink seat is required. The 120-degree included angle matches common flat-head fastener standards. Its compact head diameter makes it practical for work in confined areas or on smaller workpieces. The solid carbide construction handles harder materials and higher spindle speeds better than high-speed steel alternatives, extending tool life in production and repetitive-use environments.

Key Features

• 3/8-inch head diameter for standard countersinking and chamfering tasks
• 120-degree included angle matches common flat-head screw geometry
• 4-flute design balances chip clearance with surface finish quality
• Solid carbide construction for durability in hard materials and higher-speed applications
• 1/4-inch straight cylindrical shank fits standard collets and drill chucks

Compatibility

Designed as a standard-shank countersink compatible with drill presses, CNC machining centers, and hand-held drilling equipment accepting a 1/4-inch straight cylindrical shank.

Installation Notes

This tool is installed and used by machinists and maintenance technicians in shop or field settings. Secure the shank firmly in a collet, chuck, or tool holder rated for the intended spindle speed before operation. Power down and de-energize the machine before changing tooling. Always wear appropriate eye protection and follow shop safety practices when operating rotary cutting tools.