Hertel 331-203080 Carbide Countersink 1/4 Inch 100 Degree

Product Description

The HERTEL 331-203080 is a single-flute carbide countersink designed for creating precise angled seat profiles in metal and other hard materials. Built with a 1/4 inch head diameter and a 100-degree included angle, this tool produces clean, accurate countersunk recesses for flat-head fasteners. The carbide construction delivers extended tool life when working with ferrous metals, stainless steel, aluminum, and similar materials. The straight cylindrical shank measures 1/4 inch in diameter, making it compatible with standard drill chucks and collet holders. Machinists, tool and die workers, and general fabricators will find this countersink well suited to precision hole finishing operations.

This countersink is appropriate for use in manual drill presses, CNC machining centers, and hand-held power tools equipped with appropriate chucks. The 100-degree included angle is commonly specified for aerospace and general industrial fastener applications where a wider seating angle is required. The single-flute design reduces chatter and improves surface finish quality on difficult-to-machine materials, making it a practical choice for finishing countersinks in tight-tolerance work.

Key Features

• Carbide construction for extended tool life in hard and abrasive materials
• 1/4 inch head diameter suited to small-diameter fastener applications
• 100-degree included angle for wide-seat countersink profiles
• Single-flute geometry minimizes chatter and improves surface finish
• 1/4 inch straight cylindrical shank fits standard drill chucks and collet holders

Compatibility

Designed as an OEM-style replacement or direct-use countersink for drill presses, CNC machining centers, and hand-held drilling equipment accepting a 1/4 inch straight cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or fabricators familiar with cutting tool safety. Ensure the spindle is fully stopped and power is disconnected before inserting or removing the tool from the chuck or collet. Use appropriate cutting fluid or lubricant for the workpiece material to extend tool life and improve finish quality. Follow all applicable shop safety standards and machine manufacturer guidelines when operating.