Hertel 18762 Countersink 3/8 in 82 Degree 4 Flute Hss

Product Description

The HERTEL 18762 is a high speed steel countersink designed for creating chamfered holes that accept flat-head fasteners flush with or below a workpiece surface. It features a 3/8 inch head diameter, an 82-degree included angle, and four flutes for consistent chip evacuation and smooth seat geometry. The straight cylindrical shank is also 3/8 inch in diameter, making it compatible with standard drill chucks and quick-change toolholders. Machinists and fabricators use this tool in metalworking, sheet metal, and general manufacturing applications where precision countersunk holes are required.

This countersink is suited for production and job shop environments where a reliable, repeatable 82-degree seat is needed. The four-flute configuration reduces chatter compared to single-flute designs, making it appropriate for use in drill presses, CNC machining centers, and hand-held power drills when controlled feed and speed are maintained. It is packaged as a single unit.

Key Features

• 82-degree included angle matches the standard flat-head machine screw seat geometry
• Four flutes provide efficient chip clearance and reduced chatter
• High speed steel construction offers good wear resistance across a range of workpiece materials
• 3/8 inch straight cylindrical shank fits standard drill chucks and toolholders
• 3/8 inch head diameter suitable for common fastener sizes in light to medium stock

Compatibility

Designed as a standard 82-degree countersink for use with drill presses, CNC machining centers, and power drills equipped with a chuck or collet accepting a 3/8 inch straight cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or fabricators familiar with proper feed and speed selection for high speed steel tooling. Secure the workpiece firmly before operation and set spindle speed appropriate to the workpiece material and tool diameter. Eye protection and chip guards should be used in accordance with applicable shop safety standards. Inspect the flutes for wear or chipping before each use.