Harvey Tool 39447-C4 Corner Radius End Mill 0.0470 in 3 Flute

Product Description

The HARVEY TOOL 39447-C4 is a solid carbide corner radius end mill designed for precision milling in demanding materials including steel, stainless steel, cast iron, aluminum, and composites. The cutter measures 0.0470 inches in diameter with a 0.0050-inch corner radius and carries a diamond PVD coating for extended tool life in abrasive and hard materials. With a 3-flute, right-hand spiral geometry and centercutting capability, it handles both roughing and finishing passes. A straight cylindrical shank at 0.1250 inches diameter seats securely in standard toolholders. This tool is installed and used by machinists and toolroom technicians operating CNC machining centers and manual mills.

This end mill belongs to the Miniature End Mills - Corner Radius - Long Reach, Stub Flute series, making it suited for tight-tolerance work in confined pockets and slots where extended reach is required. The 0.5700-inch reach length and 1.5748-inch length of cut support deep-cavity milling while the stub flute design maintains rigidity. Typical applications include die and mold work, aerospace components, medical device features, and any precision part requiring a controlled edge radius in steel or non-ferrous metal. The right-hand cutting direction is standard for conventional CNC spindle operation.

Key Features

• Diamond PVD coating rated for steel, stainless steel, cast iron, aluminum, wood, and composite workpieces
• Solid carbide construction provides rigidity and wear resistance at miniature diameters
• Centercutting geometry allows direct plunge entry without a pre-drilled pilot hole
• Extended reach design with 0.5700-inch reach length for deep-cavity and confined-pocket access
• Corner radius tolerance held to plus or minus 0.0010 inches for consistent edge geometry
• Single-end, 3-flute right-hand spiral suitable for both roughing and finishing in one tool

Compatibility

Designed for use with standard CNC toolholders accepting a 0.1250-inch straight cylindrical shank. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, aluminum, wood, and composites per manufacturer material application data.

Installation Notes

Installation is performed by a machinist or toolroom technician. Confirm the toolholder bore and collet size match the 0.1250-inch shank diameter before seating the tool. Power down and lock out the spindle before changing tooling. At miniature diameters, avoid excessive runout in the toolholder, as even small amounts of radial deviation can cause premature tool breakage or dimensional error.