Harvey Tool 15320-C3 Drill Mill 5/16 in 4 Flute Altin Carbide

Product Description

The HARVEY TOOL 15320-C3 is a solid carbide drill mill designed for multi-operation machining where drilling, chamfering, and milling are performed in a single tool. With a 5/16 inch cutting diameter, a 90-degree point angle, and a 4-flute geometry, this tool transitions efficiently between center-drilling and peripheral milling without a tool change. The AlTiN coating improves heat resistance and surface hardness, extending tool life in ferrous and high-temperature alloy applications. It is used by machinists and tool-and-die professionals working on CNC machining centers and knee mills.

This drill mill is suited for precision work in job shops, production machining environments, and toolroom applications where a single tool must handle hole entry and slot or profile milling. The 13/16 inch length of cut and 2-1/2 inch overall length make it appropriate for moderate-depth features in steel, stainless, cast iron, and similar materials. The 5/16 inch shank diameter matches the cutting diameter for straightforward collet or end mill holder setup.

Key Features

• 4-flute design supports both drilling entry and milling operations in one tool
• 90-degree point angle enables chamfering, spot drilling, and countersinking
• AlTiN coating provides elevated heat resistance for extended tool life in ferrous materials
• Solid carbide construction delivers rigidity and wear resistance over high-speed steel alternatives
• Matched shank and cutting diameter at 5/16 inch simplifies toolholder selection

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide drill mill for CNC machining centers and manual knee mills accepting a 5/16 inch shank via collet chuck or end mill holder.

Installation Notes

Installation is performed by qualified machinists. Secure the shank fully in a collet or end mill holder to the manufacturer-recommended engagement depth before operation. Verify spindle runout is within acceptable tolerance before cutting, as excessive runout reduces tool life and surface finish quality. Follow the machine shop safety procedures and the tool manufacturer feed-and-speed guidelines for the specific workpiece material.