Harvey Tool 941402-C3 Corner Radius End Mill 0.109 in 4 Fl

Product Description

The HARVEY TOOL 941402-C3 is a miniature solid carbide corner radius end mill designed for precision milling in demanding materials. Built for the stub and standard series, it features a 0.109-inch mill diameter, a 0.005-inch corner radius, and an AlTiN (aluminum titanium nitride) PVD coating that extends tool life when cutting ferrous and hard materials. With 4 helical flutes in a right-hand cutting direction and a center-cutting geometry, this end mill handles both roughing and finishing passes. It is suited for machinists and tool-and-die professionals running CNC mills where tight tolerances and small-diameter tooling are required.

This end mill is used in applications requiring fine detail work and tight corner radii in a range of workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, and composites. Its short flute length and stub-profile geometry make it well suited for rigid setups with minimal tool overhang. The 1/8-inch straight cylindrical shank fits standard collet toolholders commonly found in vertical machining centers and CNC routers handling miniature or precision work.

Key Features

• 0.005-inch corner radius with a tolerance of +0.0010 to -0.0010 inches for controlled edge geometry
• AlTiN PVD coating for heat resistance and extended tool life in ferrous and hard materials
• Solid carbide construction for rigidity and wear resistance in precision applications
• 4 right-hand helical flutes with center-cutting capability for plunge and contour operations
• Short flute length profile reduces deflection in tight or deep-pocket setups
• Compatible with standard straight-bore collet toolholders via 1/8-inch cylindrical shank

Compatibility

Designed for use with standard collet-style toolholders accepting a 1/8-inch straight cylindrical shank. Rated for primary workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, and composites per ISO material codes P, M, K, N, and O.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the shank. Torque collet nuts to toolholder manufacturer specifications. Verify runout at the tool tip with a dial indicator before cutting, especially critical at this diameter range where small runout values have a proportionally large effect on tool life and part accuracy.