Hertel 18316 Countersink 1/2 in 100 Degree 6 Flute Hss

Product Description

The HERTEL 18316 is a 6-flute countersink designed for producing clean, chamfered seat angles in metal and other machinable materials. Built from high speed steel, it delivers consistent cutting performance across repeated use in production and maintenance environments. The 100-degree included angle suits a wide range of flat-head fastener applications. The 1/2-inch head diameter and straight-cylindrical shank make it compatible with standard drill chucks and collet holders. This tool is typically installed and operated by machinists, tool and die technicians, and maintenance professionals working with manual or CNC-assisted drill presses and lathes.

This countersink is suited for light to medium-duty deburring, chamfering, and seat preparation in ferrous and non-ferrous metals. The 100-degree angle is a common specification for aerospace and general-purpose flat-head machine screw applications. The straight-cylindrical shank fits standard 1/2-inch drill chucks without adapters, making it a practical choice for shop floor and field maintenance use where quick setup is required.

Key Features

• 6 flutes for smooth, chatter-resistant cutting and improved finish quality
• 100-degree included angle sized for common flat-head fastener seat preparation
• 1/2-inch head diameter with matching 1/2-inch straight-cylindrical shank
• High speed steel construction for durability across repeated cutting cycles
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose countersink for use in standard 1/2-inch drill chucks, collet holders, and compatible machine spindles accepting straight-cylindrical shanks.

Installation Notes

Countersinks are installed and operated by machinists and maintenance technicians using drill presses, lathes, or hand drills. Secure the shank firmly in the chuck before use and confirm the workpiece is properly clamped. Run at appropriate spindle speeds for the material being cut — lower speeds are generally preferred for steel to extend tool life. Inspect the cutting edges before each use and do not force a dull tool.