Harvey Tool 822755-C3 Thread Mill 5/16-18 to 5/16-48 Altin Carbide

Product Description

The HARVEY TOOL 822755-C3 is a solid carbide single profile thread mill designed to cut both internal and external threads ranging from 5/16-18 to 5/16-48, covering 18 to 48 TPI with a single tool. The cutting diameter measures 0.24 inches and the shank diameter is 0.25 inches, allowing it to fit standard quarter-inch collets. The AlTiN coating improves heat resistance and extends tool life in ferrous and hardened materials. With 4 flutes and an overall length of 2.5 inches, this tool is suited for CNC machining centers running thread milling cycles in production or job shop environments.

This thread mill is intended for machinists and CNC programmers who need a single tool to handle a range of unified thread sizes in the 5/16 diameter class. It is well suited for applications in stainless steel, alloy steel, cast iron, and other materials where the AlTiN coating provides thermal protection. The ability to cut both internal and external threads eliminates the need to swap tools when a job requires both thread forms in the same workpiece. Typical applications include precision machined components, fixture plates, and production runs requiring controlled thread form quality.

Key Features

• Cuts internal and external threads from 18 to 48 TPI with a single tool
• Solid carbide construction for rigidity and wear resistance
• AlTiN coating for heat resistance in ferrous and hardened materials
• 4-flute geometry suited for finish quality in CNC thread milling operations
• 0.16 inch neck diameter allows access in tight or interrupted bore conditions
• 0.625 inch neck length provides clearance for through-hole and blind-hole thread milling

Compatibility

Designed as a single profile thread mill for CNC machining centers equipped with quarter-inch toolholders or collets capable of running helical interpolation thread milling cycles.

Installation Notes

Thread milling requires a CNC machining center capable of 3-axis helical interpolation. Ensure the spindle and toolholder are properly balanced and that runout is within acceptable limits before running thread milling cycles. Follow the machine tool builder and cutting tool manufacturer guidelines for feeds, speeds, and coolant strategy. Secure the workpiece fully before beginning the cycle to prevent movement during the helical interpolation path.