Allied Machine TM56218CH Thread Mill 9/16-18 4 Flute Solid Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING TM56218CH is a solid carbide helical flute thread mill designed for cutting 9/16-18 UN threads in both internal and external applications. It features four right-hand flutes, a TiAlN coating for heat and wear resistance, and coolant-through capability for chip evacuation during deep or tight-tolerance operations. The cutting diameter is 0.37 inches with a length of cut of 0.875 inches and an overall length of 3 inches. This tool is used by CNC machinists and toolroom operators working with ferrous and non-ferrous materials where thread milling is preferred over tapping.

This thread mill is suited for CNC machining centers running interpolated thread cycles on both through and blind holes. The 9/16-18 UN thread form supports a range of internal and external thread applications encountered in precision manufacturing, aerospace, and general metalworking. The 3/8-inch shank diameter fits standard ER and side-lock toolholders common in production environments. Coolant-through design supports higher feed rates and extends tool life when cutting harder materials. A single tool handles both internal and external threads, reducing tooling inventory requirements.

Key Features

• Cuts 9/16-18 UN threads internally and externally with one tool
• Solid carbide construction for rigidity and wear resistance
• TiAlN coating extends tool life in high-temperature cutting conditions
• Coolant-through design aids chip evacuation and heat control
• Four right-hand helical flutes for smooth cutting action
• 3/8-inch shank diameter fits standard CNC toolholders

Compatibility

Designed for use in CNC machining centers capable of helical interpolation and compatible with standard 3/8-inch shank toolholding systems for thread milling operations.

Installation Notes

Installation and operation should be performed by qualified CNC machinists familiar with thread milling cycles and toolholder setup. Ensure the spindle and coolant system are off before loading the tool into the toolholder, and verify runout with a dial indicator before production use. Follow the machine tool manufacturer guidelines for helical interpolation parameters. Do not use this tool in manual or non-interpolating machines.