Harvey Tool 866012-C3 Corner Radius End Mill 3/16 in

Product Description

The HARVEY TOOL 866012-C3 is a solid carbide corner radius end mill designed for precision milling in demanding metal-cutting applications. The tool features a 3/16 inch (0.1875 inch) mill diameter, a 0.06 inch corner radius, and an AlTiN (aluminum titanium nitride) PVD coating that supports high-heat cutting conditions. With 3 right-hand helical flutes at a 30-degree helix angle and a stub flute length of approximately 0.117 inches, this end mill is built for both roughing and finishing operations where extended reach is required. A 1.5 inch reach length and 3 inch overall length make it suitable for deep-pocket and hard-to-access features on the workpiece.

This end mill is intended for use in CNC machining centers and manual mills where tight-tolerance corner radii are required. Primary workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, and composites. The single-end, centercutting design with a straight cylindrical shank accepts standard toolholders. It is particularly well suited for miniature and detailed part work where a long-reach, stub-flute geometry reduces deflection while maintaining access to confined features.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and non-ferrous cutting
• AlTiN PVD coating supports elevated cutting temperatures and extends tool life
• 0.06 inch corner radius with a tight tolerance of plus or minus 0.001 inch
• 1.5 inch extended reach length for deep-pocket and hard-to-access milling
• 3 right-hand helical flutes at 30-degree helix for efficient chip evacuation
• Centercutting, single-end design supports plunge entry and versatile toolpaths

Compatibility

Compatible with standard straight-bore toolholders accepting a 3/16 inch (0.1875 inch) shank diameter. Rated for use on steel, stainless steel, cast iron, non-ferrous metals, and composite workpiece materials per the HARVEY TOOL Miniature End Mills - Corner Radius - Long Reach, Stub Flute series.

Installation Notes

Installation is performed by a machinist or CNC setup technician using a compatible toolholder and appropriate retention torque per the toolholder manufacturer's specifications. Ensure the machine spindle is fully stopped and the tool change sequence is complete before handling the end mill. Inspect the shank and collet bore for contamination or damage before seating. Extended-reach tools are more sensitive to runout, so verify holder concentricity with a dial indicator before first use.