Harvey Tool 836978-C3 Square End Mill 5/64 in 4 Flute Carbide

Product Description

The HARVEY TOOL 836978-C3 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous metals, hardened steels, and high-temperature alloys. With a 5/64 inch (0.0780 inch) cutting diameter, 4 flutes, and a 30-degree helix angle, this tool delivers efficient chip evacuation and a consistent surface finish in demanding machining environments. An AlTiN coating increases surface hardness and thermal resistance, extending tool life in high-heat cutting applications. The 1/8 inch shank diameter makes it compatible with standard collet systems and tool holders used in CNC machining centers and manual mills.

This end mill is suited for tight-tolerance slotting, profiling, and contouring operations where a small-diameter cutting tool is required. The 5/16 inch length of cut and 2-1/2 inch overall length make it well-matched to shallow-pocket milling and detail work on small workpieces. It is typically installed and run by machinists and CNC operators working in job shop, aerospace, medical device, and general precision manufacturing environments.

Key Features

• AlTiN coating for increased heat resistance and extended tool life in high-speed cutting
• 4-flute design for improved surface finish and material removal rate
• 30-degree right-hand helix for efficient chip evacuation
• Solid carbide construction for rigidity and wear resistance
• Right-hand cutting direction compatible with standard spindle rotation
• Non-centercutting geometry — not suited for direct plunge entry

Compatibility

Designed as an OEM-style solid carbide square end mill for use in CNC machining centers and manual milling machines with a 1/8 inch collet or tool holder bore.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the tool from the collet. Verify collet size matches the 1/8 inch shank before tightening. This tool is non-centercutting and should not be used for direct plunge cuts — use a ramping or helical entry strategy instead.