Hertel 16ERZ14NPTHG225 Threading Insert 14 Tpi Npt Carbide

Product Description

The HERTEL 16ERZ14NPTHG225 is a laydown-style threading insert engineered for cutting right-hand external NPT threads on CNC lathes and turning centers. Built from solid carbide with a PVD-applied TiAlN coating, this insert delivers the hardness and thermal resistance required for high-speed threading operations in steel, stainless, and alloy materials. It carries a 3/8-inch inscribed circle, runs at 14 threads per inch, and measures 0.1614 inches thick. The HG225TR grade designation indicates a tough carbide substrate optimized for threading applications where edge stability and wear resistance are the primary demands. Machinists and CNC operators in precision machining, oil and gas, and general metalworking environments are the primary users of this insert.

This insert is designed for external NPT threading operations where a tapered pipe thread form is required. The 16ER insert style seats in compatible 16ER-series laydown toolholders. Applications include threading pipe fittings, hydraulic adapters, pneumatic ports, and other components requiring a standard NPT tapered thread profile. The right-hand cutting geometry suits conventional lathe rotation for the majority of standard threading cycles. This insert is sold individually and requires a minimum order quantity of 10 units.

Key Features

• Solid carbide substrate with PVD TiAlN coating for elevated wear resistance and heat dissipation
• 14 TPI NPT thread form for standard tapered pipe thread cutting
• 3/8-inch inscribed circle in the 16ER laydown insert style
• Right-hand external cutting geometry for conventional lathe threading cycles
• HG225TR manufacturer grade optimized for threading stability and edge life
• Thickness of 0.1614 inches for precise seating in compatible 16ER toolholders

Compatibility

Designed for use in 16ER-series laydown threading toolholders. Cuts external NPT tapered pipe threads at 14 TPI. Verify toolholder compatibility with the 16ER insert style and 3/8-inch inscribed circle before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before seating or replacing the insert. Use the correct torque wrench and insert screw per the toolholder manufacturer specifications to avoid cracking the carbide. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert.