Scientific Cutting Tools TMX222-27-HC Npt Thread Mill 3 Flute

Product Description

The SCIENTIFIC CUTTING TOOLS TMX222-27-HC is a helical flute thread mill designed for cutting NPT threads in both internal and external applications. Built from submicron-grade solid carbide and finished with a TiN coating, this tool delivers consistent thread geometry and extended tool life in demanding machining environments. It produces 27 TPI threads and covers two common NPT pipe thread sizes: 1/16-27 and 1/8-27. With a cutting diameter of 0.222 inches and a 0.461-inch length of cut, it is suited for compact bore profiles where precision thread engagement is critical. Machinists and tool and die professionals use this tool on CNC machining centers running helical interpolation cycles.

This thread mill is used in precision machining shops producing fittings, manifolds, instrumentation housings, and fluid system components that require NPT pipe threads. The ability to cut both internal and external threads with a single tool reduces tooling inventory and changeover time. The 1/4-inch shank diameter allows mounting in standard collet chucks and shrink-fit holders commonly found on vertical and horizontal machining centers. Right-hand flute direction suits standard spindle-forward helical interpolation programming.

Key Features

• Cuts both 1/16-27 NPT and 1/8-27 NPT threads with one tool
• Submicron-grade solid carbide substrate for rigidity and wear resistance
• TiN coating reduces friction and extends tool life in ferrous and non-ferrous materials
• 3 right-hand helical flutes for smooth chip evacuation and stable cutting action
• 0.222-inch cutting diameter suited for small-bore NPT thread applications
• 2.5-inch overall length provides clearance for typical fixture and workpiece setups

Compatibility

Designed for use in CNC machining centers capable of helical interpolation, with a 1/4-inch shank compatible with standard ER collet chucks, milling chucks, and shrink-fit toolholders. Covers NPT thread standards for 1/16-27 and 1/8-27 pipe thread sizes.

Installation Notes

This tool is installed and operated by machinists or CNC programmers on milling machines capable of helical interpolation. Secure the 1/4-inch shank in a properly sized collet or toolholder to the manufacturer-recommended clamping torque for the holder type in use. Verify spindle speed, feed rate, and helical interpolation radius match the thread mill diameter and target thread class before cutting. Coolant-through is not supported on this tool; apply flood or mist coolant externally as appropriate for the workpiece material.