Harvey Tool 787347-C3 Corner Radius End Mill 3/64 in 4 Flute

Product Description

The HARVEY TOOL 787347-C3 is a miniature solid carbide corner radius end mill designed for precision finishing operations in ferrous and non-ferrous materials. It features a 3/64 inch (0.0470 inch) mill diameter with a 0.01 inch corner radius tolerance held to plus or minus 0.0002 inch, giving machinists repeatable edge geometry on tight-tolerance features. The 4-flute, right-hand helical design runs at a 30-degree helix angle and is centercutting, allowing plunge entry. An AlTiN PVD coating provides thermal resistance and extended tool life when cutting steel and stainless steel. Licensed machinists and CNC tool-and-die technicians are the primary users of this tool.

This end mill is suited for finish milling of small-profile features in steel, stainless steel, cast iron, non-ferrous metals, and composite materials. The long-flute miniature geometry makes it appropriate for die cavities, mold cores, and precision part features where a standard-length tool cannot reach. With a 3/16 inch length of cut and 2-1/2 inch overall length on a 1/8 inch straight-cylindrical shank, it fits standard collet toolholders used in VMCs and precision CNC milling centers.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard-material finishing
• AlTiN PVD coating for thermal protection in steel and stainless steel applications
• 4-flute, right-hand helical, centercutting design allows plunge and slot entry
• 0.01 inch corner radius held to plus or minus 0.0002 inch for repeatable feature geometry
• 30-degree helix angle optimized for finish material removal rates
• Long-flute miniature series geometry for reaching confined or deep pocket features

Compatibility

Designed for use with standard collet toolholders accepting a 1/8 inch straight-cylindrical shank. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, and composites as specified by Harvey Tool for this series.

Installation Notes

Installation is performed by qualified CNC machinists using a precision collet toolholder matched to the 1/8 inch shank diameter. Ensure the machine spindle is fully stopped and the toolholder is clean and undamaged before seating the tool. Do not exceed the recommended runout tolerance for the toolholder, as miniature-diameter end mills are sensitive to runout-induced breakage. Confirm cutting parameters against Harvey Tool published speeds and feeds for the 787347-C3 series before engaging the workpiece.