Hertel 336-003090 Carbide Countersink 1/4 in 6 Flute

Product Description

The HERTEL 336-003090 is a solid carbide countersink designed for creating clean, chamfered entry holes in metal, composite, and hard material workpieces. With a 1/4 inch head diameter and a 120 degree included angle, this tool generates the tapered seat geometry needed for flathead fasteners and deburring operations. Six flutes provide a smooth cutting action and reduce chatter on the workpiece surface. The straight-cylindrical shank measures 1/4 inch in diameter, making it compatible with standard drill chucks and collet holders found on most drill presses, CNC machines, and hand-held power tools used in metalworking and fabrication environments.

This countersink is suited for production and maintenance applications where consistent chamfer geometry is required. The 120 degree included angle is commonly specified for aerospace, sheet metal, and general machining work where flathead fastener seating is critical. It is appropriate for use in machine shops, fabrication facilities, and industrial maintenance settings. The carbide construction supports use in harder workpiece materials where high-speed steel tooling would wear prematurely.

Key Features

• 1/4 inch head diameter for small-diameter countersink applications
• 120 degree included angle matches common flathead fastener seat geometry
• 6-flute design reduces chatter and improves surface finish quality
• Solid carbide construction for extended tool life in hard or abrasive materials
• Straight-cylindrical 1/4 inch shank fits standard drill chucks and collet holders

Compatibility

Designed as an OEM-style replacement or direct-use countersink for applications requiring a 1/4 inch head diameter, 120 degree included angle tool with a straight-cylindrical 1/4 inch shank.

Installation Notes

Installation and use of this countersink should be performed by qualified machinists or tooling technicians. Secure the straight-cylindrical shank firmly in the drill chuck or collet before operation and verify runout is within acceptable limits for the application. Power down and de-energize the machine spindle completely before changing or inspecting the tool. Operate within the cutting speed and feed parameters appropriate for carbide tooling and the specific workpiece material.