Hertel 336-004050 Countersink 5/16 in 60 Deg 6 Flute Carbide

Product Description

The HERTEL 336-004050 is a solid carbide countersink designed for precise, clean countersinking operations in demanding shop and field applications. It features a 5/16-inch head diameter, a 60-degree included angle, and six flutes for smooth chip evacuation and a fine surface finish at the entry point. The 1/4-inch straight cylindrical shank fits standard drill chucks and quick-change tool holders. The bright, uncoated carbide construction provides hardness and wear resistance suited to a range of metalworking and fabrication tasks. Machinists, tool and die technicians, and metalworking professionals typically install and operate this tool.

This countersink is rated for use on alloy steel, cast iron, and glass-reinforced plastic. It is suited to both production machining environments and single-operation setups where consistent countersink geometry is required. The right-hand cutting direction is compatible with standard CNC and manual drill press spindles. The single-end, no-pilot design allows direct application without a guide pilot, giving the operator full control over positioning. It ships as a single unit with a minimum order quantity of one.

Key Features

• 5/16-inch head diameter with a 60-degree included angle for standard countersink geometry
• Six flutes for improved chip clearance and a smoother finish compared to fewer-flute designs
• Solid carbide construction for hardness and wear resistance on ferrous and reinforced materials
• 1/4-inch straight cylindrical shank for compatibility with standard chucks and tool holders
• Bright, uncoated finish — no added coating to affect dimensional tolerances
• Right-hand cut, single-end design for use with standard drill press and CNC spindles

Compatibility

Rated for countersinking operations in alloy steel, cast iron, and glass-reinforced plastic. Compatible with any drill press, milling machine, or CNC setup accepting a 1/4-inch straight cylindrical shank.

Installation Notes

This tool is installed and operated by machinists or metalworking technicians. Secure the shank firmly in the chuck or collet before operation and verify spindle runout is within acceptable limits to avoid chatter or premature edge wear. Use appropriate cutting fluid or lubricant when working with alloy steel or cast iron to extend tool life. Never exceed the recommended RPM range for the material being cut — consult the applicable machining data reference for carbide tooling on the specific workpiece material.