Harvey Tool 47240-C3 Corner Radius End Mill 0.04in 4 Flute

Product Description

The HARVEY TOOL 47240-C3 is a miniature solid carbide corner radius end mill designed for high-precision milling operations in demanding materials. With a 0.04-inch mill diameter and a 0.003-inch corner radius, this stub-length, single-end tool is built for tight-tolerance work where edge integrity and dimensional accuracy are critical. The four-flute, right-hand helical design with a 30-degree helix angle promotes efficient chip evacuation and smooth surface finishes. An AlTiN (aluminum titanium nitride) PVD coating enhances heat resistance and extends tool life in ferrous and stainless applications. This tool handles both roughing and finishing cuts in a single setup.

This end mill is suited for use in CNC machining centers and high-speed spindles where miniature tooling is required. It targets mold and die work, medical component machining, aerospace detail parts, and other precision applications involving steel, stainless steel, cast iron, non-ferrous metals, and composite materials. The straight cylindrical shank fits standard 1/8-inch toolholders. Its stub-length geometry improves rigidity and reduces deflection when working in shallow-depth cavities or fine-feature profiling.

Key Features

• 0.003-inch corner radius with a tolerance of plus or minus 0.001 inches for consistent edge geometry
• AlTiN PVD coating provides thermal resistance for dry or near-dry cutting in ferrous materials
• Four right-hand helical flutes with 30-degree helix angle for efficient chip flow
• Centercutting design allows plunge entry into workpiece
• Solid carbide construction for rigidity and wear resistance at miniature diameters
• Stub-length geometry minimizes deflection in high-precision, low-depth-of-cut applications

Compatibility

Designed for use with standard 1/8-inch bore toolholders. Suitable for machining steel, stainless steel, cast iron, non-ferrous metals, and composite materials as indicated by primary workpiece material classifications P, M, K, N, and O.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Seat the shank fully and evenly in the toolholder collet to the recommended gauge length before tightening. At miniature diameters, runout control is critical — verify total indicated runout after tool assembly to prevent premature breakage.