Harvey Tool 15312-C3 Drill Mill 3/16 in 4 Flute Altin Carbide

Product Description

The HARVEY TOOL 15312-C3 is a solid carbide drill mill designed for combined drilling and milling operations in a single tool. With a 3/16 inch cutting diameter, 4-flute geometry, and a 90-degree point angle, this tool handles center drilling, spotting, chamfering, and peripheral milling without a tool change. The AlTiN (Aluminum Titanium Nitride) coating improves heat resistance and tool life in ferrous and hardened materials. Overall length is 2 inches with a length of cut of 0.625 inches. The shank diameter matches the cutting diameter at 3/16 inch, making it compatible with standard collet chucks and tool holders of that bore size. Machinists and toolroom techs select this geometry when cycle time and spindle changes need to be minimized.

The 15312-C3 is suited for CNC machining centers, vertical mills, and toolroom knee mills where multi-function tooling is practical. Typical applications include spotting holes prior to drilling, cutting countersinks, producing chamfers on part edges, and light-duty side milling in steel, stainless steel, cast iron, and hardened alloys. The 90-degree point angle is the standard for spot drilling and countersinking to 90 degrees. This tool is sold individually and is appropriate for production shops, job shops, and prototype work where tight tolerances and surface finish matter.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• AlTiN coating extends tool life and supports dry or semi-dry cutting in ferrous alloys
• 90-degree point angle suits spot drilling, chamfering, and countersinking in a single pass
• 4-flute design provides good chip evacuation and surface finish on peripheral cuts
• Matching 3/16 inch shank and cutting diameter fits standard ER collet and end mill holder systems
• Compact 2 inch overall length reduces overhang and improves rigidity in tight setups

Compatibility

Designed as a direct-fit replacement or production tool for CNC machining centers and manual mills using standard 3/16 inch bore collet chucks or end mill holders. No specific OEM model numbers are provided in the available product data.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. The tool should be seated fully into the collet or tool holder and torqued to the holder manufacturer's specification before use. Verify spindle speed and feed rate are appropriate for the workpiece material and cutting operation before engaging the cut. Never run a solid carbide tool in a worn or out-of-tolerance holder, as runout will accelerate chipping and breakage.