Hertel 16ERZAG60HG225T Threading Insert Solid Carbide

Product Description

The HERTEL 16ERZAG60HG225T is a laydown-style threading insert designed for external thread-cutting operations on metal workpieces. Built from solid carbide with a TiAlN (titanium aluminum nitride) PVD coating, this insert delivers hardness and heat resistance suited to interrupted and continuous threading passes. It cuts a 60-degree partial profile and covers a threads-per-inch range of 48 to 8 TPI, with a metric pitch equivalent of 0.50 mm to 3.00 mm. At 0.1614 inches (4.10 mm) thick and with a 3/8-inch (0.3750-inch decimal) inscribed circle, it indexes into compatible 16ER-style toolholders. Machinist-grade geometry supports right-hand external threading on CNC lathes and manual turning centers.

This insert is suited to production machining environments where consistent thread form and tool life matter. The 60-degree included angle covers the most common unified (UN), metric (M), and equivalent thread forms in external partial-profile applications. The TPI range of 48 to 8 TPI makes it versatile across fine and coarse thread pitches. Typical users include CNC machinists, tool-and-die shops, and precision metal fabrication operations running carbon steel, alloy steel, stainless, and similar materials where TiAlN coatings provide a performance advantage.

Key Features

• Solid carbide substrate with PVD-applied TiAlN coating for elevated hardness and thermal resistance
• 60-degree external partial-profile thread form covers UN, metric, and comparable standards
• Right-hand cut geometry for standard CNC lathe and turning-center threading cycles
• Wide TPI range of 48 to 8 TPI (0.50 mm to 3.00 mm pitch) reduces insert changeovers across jobs
• 16ER insert style with 3/8-inch inscribed circle fits standard laydown threading toolholders
• 4.10 mm (0.1614-inch) thickness provides stable seating in the pocket

Compatibility

Designed as an OEM-style replacement or standard supply insert for 16ER-style laydown threading toolholders accepting a 3/8-inch inscribed circle and 4.10 mm insert thickness.

Installation Notes

Threading inserts should be seated and torqued in the toolholder pocket according to the toolholder manufacturer specifications before use. Power down the machine spindle and engage the e-stop before indexing or replacing inserts. Handle solid carbide inserts with care to avoid chipping the cutting edge. Confirm the insert hand orientation and thread direction match the programmed cutting cycle before engaging the workpiece.