Harvey Tool 920512-C6 Corner Radius End Mill 3/16 in 5 Flute

Product Description

The HARVEY TOOL 920512-C6 is a solid carbide corner radius end mill designed for high-performance milling in hardened steels up to 55 Rc, stainless steel, cast iron, and hard alloys. It features a 3/16 inch (0.1875 inch) mill diameter, a 0.0050 inch corner radius, and a 5-flute geometry with a variable helix for improved chip evacuation and vibration reduction. The AlTiN PVD coating provides thermal resistance and extended tool life in demanding ferrous materials. This is a single-end, centercutting tool suited for both roughing and finishing operations, installed and operated by machinists and tool-room professionals running CNC machining centers.

The 920512-C6 is built for material-specific applications targeting steels, stainless steels, cast iron, and hard alloys. Its short flute length and close pitch make it well-suited for high-rigidity setups where chatter control and surface finish are critical. The 1/4 inch straight-cylindrical shank is compatible with high-precision toolholders. Typical applications include die and mold work, hardened component finishing, and precision pocket milling where a controlled corner radius is required to meet tight part geometry tolerances.

Key Features

• Solid carbide construction for rigidity and wear resistance in hardened materials up to 55 Rc
• AlTiN PVD coating provides thermal and oxidation resistance in high-speed ferrous machining
• Variable helix flute geometry reduces harmonics and improves surface finish
• 5-flute, close-pitch design supports both roughing and finishing in a single tool
• Centercutting capability allows plunge entry without a pre-drilled hole
• Corner radius tolerance held to plus or minus 0.0010 inch for consistent edge geometry

Compatibility

Designed for use with high-precision toolholders. Suitable for milling steel, stainless steel, cast iron, and hard alloys. Part of the HARVEY TOOL End Mills for Hardened Steels - Corner Radius series, rated for steels up to 55 Rc.

Installation Notes

Installation is performed by qualified machinists operating CNC milling equipment. Secure the 1/4 inch shank in a high-precision toolholder to the manufacturer-specified clamping torque for the holder type in use. Verify spindle runout before engaging the cut, as excessive runout accelerates edge wear on carbide end mills. Follow shop-specific feeds, speeds, and coolant protocols for the workpiece material and hardness level.