Hertel 16ER14UNHG225TR Threading Insert 14 Tpi Solid Carbide

Product Description

The HERTEL 16ER14UNHG225TR is a solid carbide laydown threading insert designed for right-hand external UN thread cutting at 14 threads per inch (TPI). It carries a TiAlN coating applied via PVD process, which provides thermal resistance and extended tool life in continuous and interrupted threading operations. The insert features a 3/8 inch (0.3750 inch) inscribed circle and a thickness of 0.1460 inches. It is used in CNC lathes and turning centers where precise, repeatable thread form is required. Machinists and toolroom operators working with UN-standard external threads will find this insert suited for production threading on steel and similar materials.

This insert is intended for external UN-standard thread profiles on turned components. The 16ER insert style seats in compatible ER-style laydown toolholders. At 14 TPI, it is well suited for threading work on fasteners, fittings, and mechanical assemblies that require UN coarse or fine thread profiles in that pitch range. The TiAlN coating supports higher cutting speeds compared to uncoated carbide, making it appropriate for medium to high-production turning applications in job shop or manufacturing environments.

Key Features

• Solid carbide substrate for rigidity and wear resistance in threading applications
• TiAlN coating via PVD process for thermal protection and extended insert life
• 14 TPI cutting geometry for UN-standard external thread profiles
• Right-hand cut orientation for standard lathe threading passes
• 3/8 inch inscribed circle (0.3750 inch) in the 16ER laydown insert style
• 0.1460 inch insert thickness for stable seating in ER-style toolholders

Compatibility

Designed for use in ER-style laydown threading toolholders that accept the 16ER insert style. Confirm toolholder seat geometry and pocket dimensions before installation to ensure proper insert retention and thread form accuracy.

Installation Notes

This insert should be installed and indexed by a qualified machinist or toolroom technician. Power down and lock out the machine before seating or replacing the insert. Use the correct torque driver for the clamping screw to avoid seat damage — do not overtighten by hand or with non-rated tools. Verify insert orientation for right-hand thread direction before initiating the threading cycle.