Harvey Tool 994593-C3 Corner Radius End Mill 0.093in 4 Flute

Product Description

The HARVEY TOOL 994593-C3 is a solid carbide corner radius end mill engineered for precision milling in demanding materials including steel, stainless steel, cast iron, and non-ferrous metals. The cutter measures 0.0930 inches in diameter with a 0.0100-inch corner radius and a 0.1400-inch length of cut. Four right-hand spiral flutes and a 30-degree helix angle combine to promote efficient chip evacuation and smooth surface finishes. An AlTiN PVD coating extends tool life in high-temperature cutting environments. This is a single-end, centercutting design, meaning it can plunge as well as profile. Installed in a toolholder by a machinist or CNC operator, it suits both roughing and finishing passes at miniature scale.

This end mill fits into the Harvey Tool Miniature End Mills - Corner Radius - Stub and Standard series, targeting applications where small-diameter, tight-tolerance cutting is required. The stub-length geometry provides added rigidity, reducing deflection during aggressive passes in steel and stainless steel. Typical use cases include slot milling, pocket milling, and profiling of small features in mold and die work, medical components, and aerospace parts. The 1/8-inch straight-cylindrical shank seats securely in standard collet toolholders. Right-hand cutting direction is standard for conventional CNC milling setups. Compatible workpiece materials include composites and cast iron in addition to ferrous and non-ferrous metals.

Key Features

• 0.0930-inch mill diameter with 0.0100-inch corner radius for precise edge-breaking and fillet generation
• Solid carbide construction for rigidity and wear resistance in hard materials
• AlTiN PVD coating improves heat resistance and extends tool life in steel and stainless steel
• 4-flute, 30-degree helix spiral design balances chip clearance and finish quality
• Centercutting geometry allows direct plunge entry without a pre-drilled pilot hole
• Stub-length body minimizes deflection in tight-tolerance miniature milling operations
• Normal pitch, non-variable helix and non-variable index for predictable, consistent cutting performance

Compatibility

Designed for use with standard collet-style toolholders accepting a 1/8-inch straight-cylindrical shank. Rated for cutting steel, stainless steel, cast iron, non-ferrous metals, and composite materials per manufacturer material application data.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the shank. Secure the end mill to the manufacturer-specified clamping torque for the toolholder in use. Confirm runout with a dial indicator before beginning the cut, as runout has an outsized effect on tool life and surface finish at small diameters.