Hertel 336-204050 Countersink 5/16 in 60 Degree 6 Flute Carbide

Product Description

The HERTEL 336-204050 is a solid carbide countersink designed for creating precise chamfered holes in metal, plastic, and composite materials. With a 60-degree included angle and six flutes, it produces clean, chatter-free entry points suitable for flat-head fastener seating and deburring operations. The 5/16-inch head diameter and straight-cylindrical shank make it compatible with standard drill chucks and collet holders. This tool is well-suited for production machining environments where consistent chamfer geometry and surface finish are required across repeated operations.

This countersink is intended for use in machine shop, metalworking, and light manufacturing applications. The six-flute design distributes cutting load evenly, reducing vibration on CNC machining centers, drill presses, and manual mills. It is appropriate for both ferrous and non-ferrous materials where a 60-degree chamfer angle is specified. Typical uses include fastener hole preparation, edge chamfering, and spot-facing on close-tolerance assemblies.

Key Features

• Solid carbide construction for extended tool life and wear resistance
• 60-degree included angle suits standard flat-head fastener requirements
• Six-flute design reduces chatter and improves surface finish
• 5/16-inch head diameter with matching straight-cylindrical shank for secure chuck grip
• Single-piece carbide body eliminates brazed joint failure points

Compatibility

Designed as a direct-use countersink for standard drill chucks and collet systems accepting a 5/16-inch straight-cylindrical shank, suitable for CNC machining centers, drill presses, and manual milling machines.

Installation Notes

Secure the shank fully in a drill chuck or collet before operation and verify runout is within acceptable limits for the application. Use appropriate cutting speeds and feeds for the workpiece material — carbide tooling generally allows higher speeds than high-speed steel but is sensitive to interrupted cuts and side loading. Wear appropriate eye protection and ensure the workpiece is firmly clamped before engaging the tool. Inspect the cutting edges for chipping before each use and remove from service if damage is observed.