Vargus 51381 Laydown Threading Insert 3ER 14 Tpi Un

Product Description

The VARGUS 51381 is a solid carbide laydown threading insert engineered for external UN thread forms at 14 threads per inch (TPI). Manufactured in the 3ER style with a 3/8-inch inscribed circle, this insert features a 60-degree included angle standard to unified thread profiles. The TiN coating is applied via a PVD process, improving surface hardness and edge wear resistance. At 0.03 pounds, it is a compact, single-edge insert intended for right-hand external threading operations on CNC lathes and turning centers. It carries ISO 9001:2008 certification, reflecting consistent manufacturing quality standards.

This insert is suited for external UN threading applications across a broad range of workpiece materials. The VKX grade with TiN PVD coating covers universal workpiece material groups, including ferrous, non-ferrous, stainless, heat-resistant alloys, and cast materials. It is used in production turning environments where repeatable thread form accuracy on right-hand external UN profiles is required. Machinists and CNC operators in job shops, contract manufacturing, and industrial production facilities are the primary users of this insert series.

Key Features

• 3ER insert style with 3/8-inch inscribed circle for right-hand external UN threading
• 14 TPI thread form with a 60-degree included angle conforming to UN thread standard
• Solid carbide substrate in VKX grade for rigidity and edge stability
• TiN coating applied via PVD process for enhanced wear resistance
• Universal workpiece material compatibility covering material groups H, K, M, N, P, and S
• ISO 9001:2008 certified manufacturing

Compatibility

Designed as a standard 3ER-style laydown threading insert compatible with toolholders accepting 3ER-series inserts for external UN thread turning applications.

Installation Notes

This insert is installed and indexed by a qualified machinist or CNC operator following the toolholder manufacturer's clamping procedure. Power down or lock out the machine spindle before seating or replacing the insert. Use the appropriate torx or clamping screw driver specified by the toolholder to secure the insert without over-torquing the clamping mechanism. Confirm thread form and pitch against part print before running the first pass.