Ingersoll Cutting Tools 5902041 Threading Insert 18 Npt

Product Description

The INGERSOLL CUTTING TOOLS 5902041 is a carbide laydown threading insert designed for internal NPT thread cutting on CNC lathes and turning centers. Designated by the ISO code 11IR18NPT, it profiles 60-degree NPT threads at 18 threads per inch using a right-hand cutting orientation. The insert carries the TT9030 manufacturer grade and features a PVD-applied TiAlN coating that improves wear resistance and extends tool life when threading steel, stainless steel, and cast iron. With a corner radius of 0.002 inches and a 1/4-inch inscribed circle, it delivers precise thread form on internal bores with minimal setup variation.

This insert is suited for shops and field machinists producing or repairing internal NPT pipe threads in ferrous and non-ferrous workpieces. Typical applications include threading pipe fittings, valve bodies, manifolds, and pressure-containing components where NPT 60-degree thread standards are required. The TiAlN PVD coating also makes it viable for secondary operations on hard materials, superalloys, and titanium where heat buildup at the cutting edge is a concern. It is sold individually and typically ordered in minimum quantities of five.

Key Features

• ISO code 11IR18NPT for internal NPT threads at 18 TPI with a 60-degree included angle
• TT9030 carbide grade with PVD TiAlN coating for extended wear life in steel and stainless steel
• Right-hand cutting orientation, no chipbreaker, NPT Regular Type series
• Corner radius of 0.002 inches for clean, accurate thread form
• Compatible with primary workpiece materials: steel, stainless steel, and cast iron (ISO P, M, K)
• Secondary material capability: hard materials, superalloys and titanium, and non-ferrous metals (ISO H, S, N)

Compatibility

Designed as a laydown threading insert for toolholders accepting the 11IR insert style. Verify toolholder seat geometry and clamping method against the 11IR designation before ordering.

Installation Notes

Installation and indexing should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and locked out before seating or replacing the insert. Use the correct torque wrench and insert screw specified by the toolholder manufacturer - do not overtighten, as carbide inserts are brittle and will crack under excess clamping force. Confirm thread pitch and insert orientation against the workpiece drawing before beginning the threading cycle.