Hertel 16ER16UNHG225TR Threading Insert 16 Tpi Carbide

Product Description

The HERTEL 16ER16UNHG225TR is a solid carbide laydown threading insert designed for external UN thread-form cutting at 16 threads per inch (TPI). It carries a TiAlN finish applied via PVD coating process, which provides heat resistance and extended tool life during high-speed threading operations. The insert measures 3/8 inch (0.375 inches) inscribed circle and 0.146 inches thick. It is a right-hand insert suited for CNC lathe and turning center applications. Machinists and CNC operators handling precision threading work on UN-standard fastener profiles will find this insert a direct fit for production and job-shop environments alike.

This insert is intended for external threading on lathes and turning centers where UN thread standards are required. The 16 TPI designation makes it appropriate for threading operations on stock that calls for standard unified national thread profiles. The 16ER insert style seats in compatible laydown-style threading toolholders. It is well suited for production machining environments where consistent thread form and coating durability across multiple parts are priorities.

Key Features

• Solid carbide construction for rigidity and wear resistance during threading
• TiAlN PVD coating for improved heat resistance and extended cutting life
• Right-hand external UN thread form at 16 TPI
• 3/8 inch inscribed circle (0.375 inches) for laydown-style toolholder seating
• 0.146 inch insert thickness for consistent depth of cut and seat stability
• 16ER insert style for use in compatible laydown threading toolholder pockets

Compatibility

Designed for use in laydown-style threading toolholders that accept the 16ER insert style. Compatible with external UN thread-form turning operations on CNC lathes and manual turning centers requiring a right-hand, 16 TPI insert.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator following the toolholder manufacturer guidelines for laydown insert seating and clamping torque. Ensure the machine spindle is fully stopped and the toolholder is secured before swapping or indexing inserts. Inspect the insert pocket and clamping screw for wear or debris before seating the insert. Follow the cutting tool manufacturer recommended speeds and feeds for carbide threading inserts on the workpiece material being machined.