Harvey Tool 857793 Corner Radius End Mill 0.093 in 3 Flute

Product Description

The HARVEY TOOL 857793 is a miniature solid carbide corner radius end mill designed for precision milling in tight-tolerance applications. With a 0.093-inch cutting diameter, a 0.5 mm (0.020 inch) corner radius, and three right-hand helical flutes at a 30-degree helix angle, this tool delivers clean edges on both roughing and finishing passes. The single-end, center-cutting design accepts a standard 1/8-inch straight cylindrical shank and is compatible with common toolholders used in CNC milling operations. Bright uncoated finish maintains tight dimensional tolerances throughout the tool life.

This end mill is suited for small-feature milling on steel, stainless steel, cast iron, non-ferrous metals, aluminum, wood, and composite materials. The stub and standard miniature series geometry makes it a practical choice for detailed work in die and mold, precision component machining, and prototype work where corner radius blending and tight tolerances are required. The 0.279-inch length of cut and 1.5-inch overall length position it for shallow-pocket and contour work in confined areas.

Key Features

• 0.093-inch mill diameter with 0.5 mm corner radius for precise edge blending
• Solid carbide construction for rigidity and wear resistance in hard materials
• 3 right-hand helical flutes at 30 degrees for efficient chip evacuation
• Center-cutting capability allows direct plunge entry
• Bright uncoated finish with tight tolerances: diameter +0.0000 / -0.0005 inch, corner radius +/-0.0010 inch
• Compatible with standard toolholders via 1/8-inch straight-cylindrical shank

Compatibility

Designed for use with standard CNC milling toolholders accepting a 1/8-inch straight cylindrical shank. Suitable for machining steel, stainless steel, cast iron, non-ferrous metals, aluminum, wood, and composite workpiece materials.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Ensure the machine spindle is fully powered down and locked before loading or changing the tool. Seat the shank fully into the toolholder and torque the collet or set screw per the toolholder manufacturer specification. Verify runout with a dial indicator before beginning a production run, particularly given the small diameter and tight tolerance of this tool.