Harvey Tool 915250-C3 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The HARVEY TOOL 915250-C3 is a solid carbide corner radius end mill designed for precision milling of steel, stainless steel, cast iron, and non-ferrous metals. It features a 3/8 inch diameter, a 0.05 inch corner radius, and four right-hand helical flutes at a 30-degree helix angle. The AlTiN (aluminum titanium nitride) PVD coating provides elevated heat resistance and extended tool life in ferrous and difficult-to-machine materials. This is a single-end, centercutting tool capable of both roughing and finishing operations in one setup. Licensed machinists and CNC operators will recognize this as a standard miniature stub/standard series tool suited for tight-tolerance work.

This end mill is used in CNC machining centers and manual mills where corner radius profiles are required to reduce stress concentrations at the base of milled features. Its short flute length and stub geometry make it well suited for rigid setups with minimal deflection. Applicable workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, and composites, covering ISO material groups P, M, K, N, and O. It is appropriate for production shops and toolrooms working with precision mold, die, and general component work.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and non-ferrous applications
• AlTiN PVD coating for high-temperature performance and extended cutting life
• 0.05 inch corner radius reduces stress risers and improves surface finish at feature transitions
• Four right-hand helical flutes at 30 degrees support both roughing and finishing in a single tool
• Centercutting geometry allows plunge entry into the workpiece
• Straight cylindrical 3/8 inch shank fits standard ER and side-lock toolholders

Compatibility

Designed for use with standard toolholders accepting a 3/8 inch straight cylindrical shank. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, and composites per ISO material codes P, M, K, N, and O.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and the tool is secured in a properly sized collet or toolholder before tightening. Verify runout at the cutting diameter before engaging the workpiece, as excessive runout will accelerate edge wear on carbide tooling. Follow the toolholder manufacturer torque guidelines when tightening collet nuts or set screws.