Harvey Tool 846120-C3 Square End Mill 0.5mm 4 Flute Altin

Product Description

The HARVEY TOOL 846120-C3 is a miniature square end mill designed for precision milling in tight geometries and micro-scale applications. Ground from solid carbide, it measures 0.5 mm (0.0200 inches) in cutting diameter with a 0.06-inch length of cut and a 1/8-inch shank diameter. The 4-flute configuration and 30-degree helix angle promote efficient chip evacuation and surface finish quality in hard or abrasive workpiece materials. An AlTiN coating adds oxidation resistance and elevated-temperature hardness, extending tool life in ferrous and hardened materials. Overall length is 1.5 inches, with an extended reach of 0.2 inches, making this tool suitable for deep-pocket and hard-to-reach features.

This end mill is used in CNC machining centers for micro-milling operations on molds, dies, medical components, and aerospace parts where tight tolerances and fine detail are required. Right-hand cutting and right-hand flute direction follow standard CNC spindle rotation. The extended reach configuration allows access to recessed features without excessive tool deflection. Machinists working in tool steels, stainless steels, titanium, and hardened alloys will find the AlTiN coating and solid carbide substrate well-suited to these demanding materials. Not centercutting — plunge operations should be avoided with this tool.

Key Features

• 0.5 mm (0.0200 inch) cutting diameter for micro-scale milling applications
• Solid carbide substrate for rigidity and wear resistance in hard materials
• AlTiN coating provides high-temperature oxidation resistance and extended tool life
• 4 flutes with 30-degree helix angle for efficient chip evacuation and improved surface finish
• Extended reach design (0.2 inches) for access to recessed or deep-pocket features
• Non-centercutting geometry — designed for peripheral and slot milling, not plunge cutting

Compatibility

Designed as a direct-fit replacement or standard solid carbide square end mill for CNC machining centers using 1/8-inch diameter tool holders or collets. Suitable for use in high-speed spindles running right-hand rotation.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe state before loading or unloading the tool. Use a properly sized ER or precision collet for the 1/8-inch shank to minimize runout, which is critical at this diameter. At 0.5 mm cutting diameter, excessive runout or improper feeds and speeds will result in immediate tool breakage — consult the manufacturer cutting data for this tool before first use.