Harvey Tool 76478 Square End Mill 5/64 in 4 Flute Carbide

Product Description

The HARVEY TOOL 76478 is a solid carbide square end mill designed for precision milling in metal, composite, and hard material applications. With a 5/64 inch (0.0781 inch) cutting diameter and a 15/64 inch (0.234 inch) length of cut, this tool is built for tight-tolerance profiling, slotting, and contouring in confined workspaces. The 4-flute geometry and 30-degree right-hand helix deliver efficient chip evacuation and a smooth surface finish. The bright uncoated finish suits general-purpose machining where coating is not required or where post-machining inspection demands a clean surface. Machinists and CNC operators in tool shops, production facilities, and job shops are the primary users.

This end mill is suited for light-duty to moderate milling passes in ferrous and non-ferrous materials. The 1/2 inch extended reach beyond the flute zone allows access to stepped features, pockets, and recesses that shorter tools cannot reach. The 1/8 inch shank fits standard collets and end mill holders common to CNC machining centers and manual knee mills. Its centercutting capability allows plunge entry, making it useful for ramp-in and helical interpolation toolpaths as well as conventional side milling operations.

Key Features

• 5/64 inch cutting diameter (0.0781 inch decimal) for fine-detail milling work
• 4 flutes with a 30-degree right-hand helix for smooth cutting action and chip evacuation
• Solid carbide construction for rigidity and wear resistance compared to HSS tooling
• Centercutting design supports plunge, ramp, and helical entry toolpaths
• Extended reach of 1/2 inch provides access to deep pockets and stepped features
• Bright uncoated finish suitable for general-purpose and inspection-critical applications

Compatibility

Designed for use in CNC machining centers and manual mills equipped with 1/8 inch collets or end mill holders accepting a 1/8 inch shank diameter.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Ensure the machine spindle is fully powered down and at rest before loading or unloading tooling. Seat the 1/8 inch shank fully in the collet or holder and torque the retention nut to the tool holder specification. Verify runout with a dial indicator before beginning a production run, as small-diameter carbide tools are sensitive to excessive runout and may fracture under load.