Hertel 18013 Countersink 1/4 in Hss 100 Degree 1 Flute

Product Description

The HERTEL 18013 is a single-flute countersink designed for producing clean, chamfered entry holes in metal and similar materials. Built from high speed steel, this tool delivers consistent cutting performance across standard machining and fabrication tasks. The 100-degree included angle suits flat-head fastener seating in applications where that geometry is specified. With a 1/4-inch head diameter and a 1/4-inch straight cylindrical shank, it fits directly into standard drill chucks and collet holders without adapters. Machinists, tool and die workers, and maintenance technicians use this countersink for deburring, chamfering, and fastener-seat preparation on light-duty workpieces.

This countersink is suited for use in manual drill presses, CNC machining centers, and hand-held power drills where a 1/4-inch shank is accepted. It is appropriate for metalworking, sheet metal fabrication, and general maintenance applications requiring a precise 100-degree chamfer. The single-flute geometry reduces chatter on softer metals and produces a smooth finish in shallow countersink operations. It is sold individually and is a practical addition to a standard machining tool kit.

Key Features

• 1/4-inch head diameter for compact countersinking in tight clearance areas
• 100-degree included angle for flat-head fastener seating where that specification is required
• Single-flute design reduces chatter and promotes smooth cutting on softer metals
• High speed steel construction provides durability across general machining tasks
• 1/4-inch straight cylindrical shank fits standard drill chucks and collet holders

Compatibility

Designed as a standard single-flute countersink for use in any drill press, machining center, or hand-held power drill that accepts a 1/4-inch straight cylindrical shank.

Installation Notes

Secure the shank firmly in a drill chuck or collet before use and verify the tool is fully seated to prevent runout. Power down the machine and disconnect or lock out the power source before installing or removing the countersink. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Follow applicable shop safety standards and wear eye protection during all machining operations.