Hertel 18293 Countersink 3/16 in 60 Degree 6 Flute Hss

Product Description

The HERTEL 18293 is a single-use countersink designed for creating conical seat holes in metal and other materials prior to fastener installation. Built from high speed steel, it delivers consistent cutting performance across repeated use in production and maintenance environments. The tool features a 3/16-inch head diameter, a 60-degree included angle, and six flutes that promote clean chip evacuation and a smooth finish at the countersink seat. The straight cylindrical shank allows straightforward mounting in standard drill chucks or collet holders. Machinists, tool-and-die technicians, and maintenance mechanics are the primary users of this type of tool.

This countersink is suited for light-duty deburring and countersinking operations in metal fabrication, maintenance repair, and precision machining applications. The 60-degree included angle is commonly specified for aerospace-style fastener seats and precision sheet metal work. The 3/16-inch diameter makes it appropriate for small-bore applications where larger countersinks would remove excess material or cause surface damage.

Key Features

• 3/16-inch head diameter for small-bore countersinking applications
• 60-degree included angle matches common precision fastener seat specifications
• 6-flute design promotes chip clearance and a clean seat finish
• High speed steel construction provides durability across a range of workpiece materials
• Straight cylindrical shank — 3/16 inch — fits standard drill chucks and collet holders

Compatibility

Designed as a standard straight-shank countersink compatible with drill presses, hand drills, and CNC machining centers equipped with a chuck or collet sized to accept a 3/16-inch cylindrical shank.

Installation Notes

Installation and use of this tool should be performed by qualified machinists or maintenance technicians familiar with rotating cutting tools. Secure the shank fully in the chuck or collet before operation and verify the workpiece is firmly clamped. Always power down and de-energize the machine before changing tooling. Use appropriate cutting fluid or lubricant for the workpiece material to extend tool life and improve surface finish.