Carmex 30-11.5NPTFMT7 Carbide Thread Mill Insert Nptf

Product Description

The CARMEX 30-11.5NPTFMT7 is a carbide thread mill insert designed for cutting NPTF tapered pipe threads at 11.5 teeth per inch (TPI). Built from submicron carbide and coated with TiAlN for extended tool life at elevated cutting temperatures, this insert suits both internal and external thread milling applications. The conical geometry conforms to ANSI B1.20.3-1976 for NPTF thread form accuracy. At 0.2165 inches (5.5 mm) thick, the insert is sized for use in compatible Carmex MT7-grade thread mill bodies. Installation requires a licensed machinist or CNC tooling specialist working with appropriate thread mill toolholders.

This insert is used in CNC machining centers for producing NPTF tapered pipe threads on ferrous and non-ferrous workpieces in both internal bore and external boss configurations. Typical applications include hydraulic fittings, pneumatic components, and fluid transfer hardware where pressure-tight pipe thread connections are required. The TiAlN coating makes it well suited for dry or semi-dry cutting conditions at moderate-to-high spindle speeds.

Key Features

• Submicron carbide substrate for wear resistance and edge integrity
• TiAlN coating extends tool life in high-temperature cutting environments
• Conical insert geometry produces NPTF thread form per ANSI B1.20.3-1976
• Cuts both internal and external NPTF threads with a single insert style
• 11.5 TPI matches standard NPTF pipe thread pitch for tapered pipe applications
• MT7 manufacturer grade for use in compatible Carmex thread mill bodies

Compatibility

Designed for use in compatible Carmex MT7-grade thread mill toolholders accepting 30-series inserts. Verify toolholder seat geometry and clamping style before ordering.

Installation Notes

Thread mill inserts should be installed and indexed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before changing inserts. Use the correct torque wrench and insert screw per the toolholder manufacturer specification. Confirm thread form accuracy with a calibrated NPTF ring or plug gauge after first article machining.