Carmex 30-11.5NPTMT7 Carbide Thread Mill Insert Npt

Product Description

The CARMEX 30-11.5NPTMT7 is a carbide thread mill insert engineered for cutting NPT (National Pipe Taper) threads at 11.5 teeth per inch. Built from submicron carbide stock in the MT7 manufacturer grade and finished with a TiAlN coating, this insert delivers the heat resistance and edge retention demanded in production threading environments. The conical geometry conforms to the ANSI B1.20.1-1983 standard for tapered pipe threads. At 0.2165 inches (5.5 mm) thick, the insert seats securely in compatible thread mill tooling. It supports both internal and external thread milling applications, making it a versatile choice for shops producing NPT-threaded pipe fittings, fluid system components, and manifold ports.

This insert is suited for use in CNC machining centers performing NPT thread milling on ferrous and non-ferrous workpieces. Typical applications include threading pipe ports in hydraulic blocks, valve bodies, and pneumatic manifolds where a tapered pipe thread seal is required. The TiAlN finish extends tool life at elevated cutting temperatures, making it appropriate for dry or near-dry machining operations. The insert style is 30IE, and the insert size code is 30, intended for use in a matching 30-series thread mill body.

Key Features

• Submicron carbide substrate in MT7 grade for consistent edge sharpness and wear resistance
• TiAlN coating provides high-temperature hardness and oxidation resistance
• Conical geometry matches ANSI B1.20.1-1983 NPT taper thread standard
• 11.5 TPI pitch cuts standard NPT pipe thread forms in a single helical interpolation pass
• Supports both internal and external thread milling from one insert style
• Insert thickness of 0.2165 inches ensures stable seating in 30-series tooling bodies

Compatibility

Designed for use in 30-series CARMEX thread mill bodies accepting the 30IE insert style. Cuts NPT threads per ANSI B1.20.1-1983 on internal and external applications. Confirm holder compatibility by matching the 30-series insert size code before installation.

Installation Notes

Thread mill inserts are installed and changed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or replacing any insert. Use the correct torque wrench and insert screw specified by the tooling body manufacturer - do not over-torque the clamping screw, as carbide inserts are brittle and can fracture under uneven clamping force. Verify insert seating and runout with a dial indicator before initiating a threading program.