Hertel 331-208060 Carbide Countersink 3/4 in 82 Degree

Product Description

The HERTEL 331-208060 is a single-flute carbide countersink designed for producing clean, accurate countersunk holes in metal, composite, and similar hard materials. With a 0.75-inch head diameter and an 82-degree included angle, this tool generates the precise seat geometry required for flathead fasteners in close-tolerance machining applications. The straight-cylindrical shank measures 0.75 inches in diameter, providing positive chuck engagement in standard drill presses, CNC machining centers, and hand-held power tools. The single-flute geometry reduces cutting forces and chatter, making it well suited for materials that demand a fine surface finish at the countersink seat. Carbide construction delivers extended tool life compared to high-speed steel alternatives.

This countersink is used in production and maintenance machining environments where flathead screws or bolts must sit flush with or below a workpiece surface. Typical applications include sheet metal fabrication, aerospace and structural assemblies, and general machine shop work requiring consistent 82-degree seating angles. It is appropriate for use by machinists, tool-and-die technicians, and maintenance professionals working with metallic and hard non-metallic substrates.

Key Features

• 0.75-inch head diameter provides a wide countersink footprint suitable for larger flathead fastener sizes
• 82-degree included angle matches the standard seating geometry for flat-head machine screws
• Single-flute carbide design minimizes chatter and delivers a smooth seat finish
• Straight-cylindrical 0.75-inch shank fits standard drill chucks and collet holders without adapters
• Solid carbide construction resists wear when machining hardened steels, stainless, and abrasive composites

Compatibility

Designed for use in standard drill presses, CNC machining centers, and hand-held power tools accepting a 0.75-inch straight-cylindrical shank. Suited for producing 82-degree countersunk seats for flathead fasteners in metal and hard composite workpieces.

Installation Notes

This tool is installed by a machinist or qualified technician using a drill press, mill, or CNC spindle with a compatible chuck or collet sized for a 0.75-inch shank. Secure the workpiece firmly before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Inspect the cutting edge before use and replace the tool if chipping or wear is detected. Follow applicable shop safety procedures including eye protection and guarding.