Harvey Tool 54206-C3 Thread Mill 2-56 to 2-64 Solid Carbide

Product Description

The HARVEY TOOL 54206-C3 is a single profile thread mill designed to cut both internal and external threads in the #2-56 to #2-64 size range, covering 56 to 64 threads per inch (TPI). Built from solid carbide and finished with an AlTiN coating, this tool delivers wear resistance and thermal stability in demanding milling operations. With a 0.064-inch cutting diameter and a 0.038-inch neck diameter, it is engineered for fine-pitch, small-diameter thread work where precision and rigidity are critical. CNC machinists and tool-and-die professionals use this mill in both production and prototype applications.

This thread mill is suited for use in machining centers capable of helical interpolation. It handles both internal thread milling in blind or through holes and external thread profiles on small fastener-scale features. The 1/8-inch shank diameter makes it compatible with standard collet chucks and small-bore toolholders common in precision machining setups. Applications include aerospace components, medical device parts, and precision instrument housings where fine #2-series threads are specified.

Key Features

• Cuts #2-56 to #2-64 thread profiles, internal and external, with a single tool
• Solid carbide construction for rigidity and dimensional stability in fine-pitch work
• AlTiN coating improves heat resistance and extends tool life in ferrous and hardened materials
• 0.064-inch cutting diameter with 0.038-inch neck diameter for access in tight geometries
• 2-flute design balances chip evacuation with edge strength at small diameters
• 1/8-inch shank fits standard precision collet systems

Compatibility

Designed for use in CNC machining centers with helical interpolation capability. Fits standard 1/8-inch collet chucks and compatible small-diameter toolholding systems used in precision milling operations.

Installation Notes

Thread milling with this tool requires a CNC control programmed for helical interpolation — consult the machine tool documentation before setup. Ensure the spindle and toolholder are clean and properly torqued before running. Feed rates and spindle speeds should be calculated based on workpiece material and cutting diameter; do not apply drilling or tapping parameters to thread milling operations. Handle solid carbide tooling carefully to avoid chipping the cutting edges during loading and storage.