Hertel 19312 Countersink 1/2 in 90 Degree 6 Flute Hss

Product Description

The HERTEL 19312 is a 6-flute high speed steel countersink designed for producing clean, accurate countersunk holes in metal and other materials. With a 1/2 inch head diameter and a 90-degree included angle, this tool generates the correct seat geometry for flat-head fasteners in a single pass. The 1/4 inch straight-cylindrical shank mounts directly in standard drill chucks and collet holders. It is well suited for machinists, tool and die workers, and fabricators who require consistent hole geometry on the bench or in a production environment.

This countersink is used in metalworking applications where flush-mount fastener seating is required. The 90-degree included angle matches the most common flat-head machine screw geometry used in structural fabrication, sheet metal work, and general machining. The straight-cylindrical shank with a 1 inch shank length provides rigid tool holding in benchtop drill presses, CNC machining centers, and hand-held power drills. The 6-flute geometry distributes cutting load evenly, reducing chatter and improving surface finish compared to single- or three-flute designs.

Key Features

• 1/2 inch head diameter for standard flat-head fastener countersinking
• 90-degree included angle matches common flat-head machine screw geometry
• 6 flutes distribute cutting load and reduce chatter for a cleaner finish
• High speed steel construction provides durability across ferrous and non-ferrous materials
• 1/4 inch straight-cylindrical shank fits standard drill chucks and collet holders
• 1 inch shank length provides stable grip in drill presses and machining centers

Compatibility

Designed as a standard-geometry countersink for use in drill presses, CNC machining centers, and hand-held power drills accepting a 1/4 inch straight-cylindrical shank.

Installation Notes

Installation and use should be performed by a qualified machinist or fabricator familiar with rotary cutting tools. Secure the shank fully in the chuck or collet before operation and verify that the workpiece is clamped firmly to prevent movement. Use appropriate cutting fluid for the material being machined to extend tool life and improve finish quality. Inspect the cutting edges before use and replace the tool if chipping or wear is observed.