Hertel 334-003070 Carbide Countersink 1/4 Inch 4 Flute 90 Deg

Product Description

The HERTEL 334-003070 is a solid carbide countersink designed for producing clean, chamfered entry holes in metal and other hard materials. Built with a 90-degree included angle and four flutes, it delivers smooth cutting action and consistent finish quality in production and maintenance machining applications. The 1/4-inch head diameter and matching 1/4-inch straight cylindrical shank make it compatible with standard drill chucks and collet holders. Carbide construction provides extended tool life compared to high-speed steel alternatives, particularly in harder workpiece materials. Machinists, tool-and-die workers, and maintenance technicians rely on this style of countersink for deburring, countersinking fastener seats, and chamfering hole edges.

This countersink is suited for use in manual drill presses, CNC machining centers, and hand-held drilling equipment where a 1/4-inch shank is accepted. Typical applications include countersinking for flathead screws, deburring drilled holes in steel and aluminum components, and edge-chamfering in general fabrication and repair work. The 90-degree included angle aligns with the most common flathead fastener geometry used in industrial and mechanical assemblies.

Key Features

• 1/4-inch head diameter for compact, precise countersinking in tight clearances
• 90-degree included angle matches standard flathead fastener seating geometry
• 4-flute design promotes smooth cutting and reduced chatter
• Solid carbide construction for extended tool life in hard materials
• Straight cylindrical shank fits standard drill chucks and collet holders

Compatibility

Designed as an OEM-style replacement or direct-use countersink for machining setups accepting a 1/4-inch straight cylindrical shank, including drill presses, milling machines, and hand-held power tools with compatible collet or chuck systems.

Installation Notes

Installation and use should be performed by qualified machinists or tool operators familiar with cutting tool safety. Secure the shank fully in the chuck or collet before operation and verify runout before beginning a cut. Use appropriate cutting speeds for the workpiece material and carbide tooling — excessive speed or feed can chip carbide. Wear appropriate eye protection and follow applicable shop safety standards when operating rotary cutting tools.