Hertel 18065 Countersink 1/4 in 82 Degree 6 Flute Hss

Product Description

The HERTEL 18065 is a single-shank countersink designed for creating chamfered seat profiles in drilled holes. Built from high-speed steel, this tool delivers consistent cutting performance on ferrous and non-ferrous materials. The 1/4 inch head diameter and 82-degree included angle make it well suited for countersinking standard flat-head fastener holes in metal, wood, and composite substrates. Six flutes distribute cutting load evenly and help produce a smooth, chatter-free finish. The straight-cylindrical shank measures 1/4 inch in diameter and 1 inch in length, providing a secure grip in standard drill chucks and collet holders.

This countersink is intended for use in machine shops, maintenance and repair operations, fabrication environments, and production assembly lines. The 82-degree included angle is calibrated for flat-head fasteners that follow ANSI and metric standards calling for that geometry. It is appropriate for use in drill presses, CNC machining centers, hand drill applications, and manual milling setups where a precise countersunk seat is required prior to fastener installation.

Key Features

• 82-degree included angle for ANSI flat-head fastener compatibility
• 6-flute design reduces chatter and produces a smooth seat finish
• High-speed steel construction for durability across a range of workpiece materials
• 1/4 inch straight-cylindrical shank fits standard drill chucks and collet holders
• Compact 1 inch shank length for use in confined setups
• Single-piece construction with no adjustable parts to slip or mis-set

Compatibility

Designed as a standard single-shank countersink for use with drill presses, CNC machining centers, and hand-held drill applications that accept a 1/4 inch straight-cylindrical shank.

Installation Notes

Install the shank fully into the chuck or collet and verify it is seated and clamped securely before operation. Power down or de-energize the machine completely before changing or inspecting tooling. Use appropriate cutting fluid when working with harder ferrous materials to extend tool life and improve finish quality. Inspect the cutting edges for wear or chipping before each use and replace the tool if edge degradation is visible.