Hertel 300-005504 Combo Drill Countersink Size 4 Solid Carbide

Product Description

The HERTEL 300-005504 is a combination drill and countersink designed for precise hole preparation in metalworking and machining applications. Built from solid carbide with a titanium nitride (TiN) coating, this tool delivers hardness and wear resistance suited for demanding production environments. The body measures 5/16 inches in diameter with a 1/8-inch drill point diameter and a 1/8-inch drill point length. Overall length is 4 inches. The 118-degree drill point angle and 60-degree included countersink angle follow standard tooling conventions. This tool is sold and installed by machinists, tool-and-die makers, and precision metal fabricators.

This combo drill countersink is used in both manual and CNC machining setups where a pilot hole and countersink must be produced in a single operation. The right-hand cutting direction and plain cutting edge style make it compatible with standard right-hand spindle machines. The double end type extends tool life by providing two usable ends. The long-length designation suits deeper reach applications in production or prototype work across a range of ferrous and non-ferrous materials.

Key Features

• Solid carbide construction for hardness and heat resistance in metal cutting
• TiN coating extends tool life and reduces friction during cutting
• 118-degree drill point angle matches standard twist drill geometry
• 60-degree included countersink angle for standard fastener seating
• Double-end design doubles usable tool life before replacement
• Long-length at 4 inches overall for extended reach applications

Compatibility

Designed as an OEM-style replacement and standard production tooling for right-hand spindle machining centers, drill presses, and CNC equipment using combination drill countersink tooling in size 4 with a 5/16-inch body diameter.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Always power down and lock out the machine spindle before changing tooling. Secure the tool in the appropriate collet or tool holder to the correct depth per the machine manufacturer specifications. Verify spindle rotation direction matches the right-hand cut designation before operation.