Vargus 80516 Carbide Thread Mill Insert Npt 14 Tpi

Product Description

The VARGUS 80516 is a carbide thread mill insert designed for cutting NPT pipe threads at 14 teeth per inch on both internal and external profiles. Manufactured from micrograin carbide and finished with a TiAlN coating applied via PVD process, this insert delivers consistent thread geometry in non-ferrous metals, superalloys, and titanium. It carries the VTX manufacturer grade designation and conforms to USAS B2.1:1968 thread standards. The R25EI insert style fits the Standard MiTM series tooling system. Installation is performed by machinists and CNC tooling technicians in shop environments requiring precision pipe thread production.

This insert is suited for thread milling operations where a single insert must handle both internal and external NPT thread profiles without tool changeover. Typical applications include threading pipe fittings, valve bodies, and fluid system components in non-ferrous and high-temperature alloy materials. The primary workpiece material classification is N, covering non-ferrous metals, superalloys, and titanium. It is well-suited for production environments where thread quality and tool life in difficult materials are priorities.

Key Features

• Micrograin carbide substrate for edge stability in superalloys and titanium
• TiAlN coating via PVD process improves wear resistance in non-ferrous and high-temp materials
• Cuts both internal and external NPT threads at 14 TPI with one insert
• Conforms to USAS B2.1:1968 NPT thread standard
• R25EI insert style fits Standard MiTM series thread mill bodies
• VTX grade designation for demanding workpiece materials

Compatibility

Designed for use in Standard MiTM series thread mill holders accepting the R25EI insert style with size code 25. Intended for NPT threading applications per USAS B2.1:1968 in non-ferrous metals, superalloys, and titanium workpieces.

Installation Notes

Insert installation and indexing should be performed by qualified machinists or CNC tooling technicians with the machine powered down and in a locked-out state. Use the appropriate torque wrench and insert screw specified by the toolholder manufacturer when seating the insert. Inspect the insert pocket for chips or damage before seating a new insert. Follow the thread mill body manufacturer's programming guidelines for helical interpolation to achieve on-spec NPT thread form and pitch.