Hertel 18010 Countersink 1/4 in 60 Degree 1 Flute Hss

Product Description

The HERTEL 18010 is a single-flute countersink designed for creating angled seat bores in metal and similar materials. With a 1/4-inch head diameter and a 60-degree included angle, this tool produces clean, precise countersunk recesses for flathead fasteners and deburring operations. The 1/4-inch straight cylindrical shank fits standard drill chucks and quick-change holders. Constructed from high speed steel (HSS), it delivers reliable cutting performance across a range of workpiece materials. Machinists, tool-and-die workers, and fabricators use this countersink for both production and maintenance applications.

This countersink is suited for light-duty countersinking operations on ferrous and non-ferrous metals, plastics, and composite materials. The 60-degree included angle is commonly specified for machine screw and metric fastener seating. The single-flute geometry reduces chatter and improves finish quality in hand-drill and drill-press setups. It is a practical choice for bench work, field fabrication, and low-volume production runs where a compact, small-diameter countersink is required.

Key Features

• 1/4-inch head diameter suited for small fastener recesses and precision countersinking
• 60-degree included angle matches common machine screw and metric fastener seating geometry
• Single-flute design minimizes chatter and promotes a smooth finished surface
• High speed steel construction provides durable cutting performance on metal and plastic
• 1/4-inch straight cylindrical shank fits standard chucks and quick-change systems

Compatibility

Designed as a standard single-flute countersink for use in drill presses, hand drills, and CNC machines accepting a 1/4-inch straight cylindrical shank tool.

Installation Notes

Installation is performed by machinists or skilled fabricators using a drill press, mill, or hand drill. Secure the workpiece firmly before operation to prevent movement. Use appropriate cutting fluid on ferrous metals to extend tool life and improve finish quality. Inspect the cutting edge before each use and replace if chipping or dulling is observed.