Hertel 18310 Countersink 3/8 in 90 Degree 6 Flute Hss

Product Description

The HERTEL 18310 is a 6-flute, 90-degree countersink designed for creating clean, chamfered seat profiles in metal, wood, and composite materials. Built from high speed steel, it delivers consistent cutting performance across production and maintenance applications. The straight cylindrical shank measures 3/8 inches in diameter, matching the 3/8-inch head diameter for a compact, balanced profile. It is suited for use in drill presses, milling machines, and hand-held power tools equipped with a standard 3/8-inch chuck or collet. Machinists, fabricators, and maintenance technicians are the primary users of this tool.

This countersink is used in general metalworking, sheet metal fabrication, woodworking, and light manufacturing environments. The 90-degree included angle is the most common standard for flat-head fastener seating in both imperial and metric applications, making this tool a practical choice for preparing holes to accept flat-head screws and bolts in a wide range of materials and industries.

Key Features

• 90-degree included angle for standard flat-head fastener seating
• 6-flute design reduces chatter and produces a smoother finish than fewer-flute alternatives
• High speed steel construction provides durability across a range of workpiece materials
• 3/8-inch straight cylindrical shank fits standard chucks and collets
• 3/8-inch head diameter suits medium-scale countersinking tasks

Compatibility

Designed for use with drill presses, milling machines, and power drills equipped with a 3/8-inch or larger chuck. Compatible with standard 3/8-inch straight-shank tool holders and collet systems.

Installation Notes

This tool is installed and operated by machinists, fabricators, or maintenance technicians. Secure the straight shank firmly in the chuck or collet before operation and verify runout is within acceptable limits to prevent chatter. Always reduce spindle speed when countersinking harder materials to extend tool life and maintain cut quality. Use appropriate cutting fluid for metal applications.