Hertel 18553 Countersink 1 in 100 Deg 6 Flute Hss

Product Description

The HERTEL 18553 is a high speed steel countersink designed for creating angled seat recesses in metal, wood, and composite materials prior to fastener installation. With a 1 inch head diameter, a 100 degree included angle, and 6 cutting flutes, this tool produces clean, consistent countersunk holes suited for flathead fastener applications. The straight cylindrical shank measures 1/2 inch in diameter, providing secure chuck retention in standard drill presses and hand-held power tools. The 6-flute configuration reduces chatter and delivers a smoother finish compared to lower-flute-count tools, making it a reliable choice for production and maintenance work.

This countersink is appropriate for metalworking shops, maintenance facilities, and fabrication environments where repeatable countersink geometry is required. It is suited for use in drill presses, milling machines, and CNC machining centers that accept straight cylindrical shanks. Machinists, tool-and-die workers, and maintenance technicians working with steel, aluminum, brass, and similar materials will find this tool applicable to standard countersinking operations for flathead machine screws and similar fasteners.

Key Features

• 1 inch head diameter provides coverage for a wide range of fastener head sizes
• 100 degree included angle matches common flathead fastener seat specifications
• 6 flutes reduce chatter and improve surface finish quality
• High speed steel construction offers durability across a range of workpiece materials
• 1/2 inch straight cylindrical shank fits standard drill chucks and collets

Compatibility

Designed as an OEM-style single-piece countersink compatible with drill presses, milling machines, and machining centers accepting a 1/2 inch straight cylindrical shank.

Installation Notes

Installation is performed by machinists or maintenance technicians using standard drill press or milling machine setups. Secure the shank firmly in the chuck or collet before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Power down and de-energize the machine completely before changing or adjusting the tool. Use appropriate cutting fluid when countersinking harder metals to extend tool life and maintain hole quality.