Hertel 16ERZ115NPHG330 Threading Insert 11.5 Tpi Npt

Product Description

The HERTEL 16ERZ115NPHG330 is a laydown-style external threading insert designed for cutting NPT (National Pipe Taper) threads on CNC lathes and turning centers. Manufactured from solid carbide with a TiAlN coating applied via PVD process, this insert delivers consistent thread form and extended tool life across ferrous and non-ferrous workpiece materials. It cuts right-hand external threads at 11.5 threads per inch, matching the NPT standard for pipe and fitting applications. The 3/8-inch inscribed circle and 4.10 mm thickness fit standard 16ER-style toolholders. Machinists and tool-and-die professionals specify this insert for production threading of pipe-thread profiles where dimensional accuracy and surface finish are critical.

This insert is suited for external NPT threading operations in job shop, production machining, and maintenance-repair environments. The 11.5 TPI pitch corresponds to standard NPT sizing used across plumbing, HVAC, and industrial piping applications. It is intended for use in 16ER-compatible laydown insert toolholders and is appropriate for both manual and CNC turning applications where a right-hand cutting direction is required. Minimum order quantity is 10 inserts; each package contains 1 insert.

Key Features

• Solid carbide substrate for rigidity and wear resistance in threading operations
• TiAlN coating via PVD process improves heat resistance and extends cutting edge life
• 11.5 TPI pitch matches NPT thread standard for pipe and fitting work
• Right-hand, external thread cutting geometry in a 16ER laydown insert style
• 3/8-inch (0.3750 inch) inscribed circle fits standard 16ER toolholder pockets
• 4.10 mm (0.1614 inch) thickness for stable seating in compatible insert pockets

Compatibility

Designed for use in 16ER-style laydown threading toolholders that accept a 3/8-inch inscribed circle insert. Verify toolholder pocket dimensions and insert style designation before installation.

Installation Notes

Installation should be performed by a qualified machinist familiar with indexable insert tooling. Ensure the machine spindle is fully stopped and the toolholder is secured in the turret before seating or indexing the insert. Use the appropriate torque wrench and clamp screw specified by the toolholder manufacturer to secure the insert without over-torquing. Inspect the insert pocket for chips or debris before seating to ensure proper insert contact and repeatability.