Vargus 51194 Laydown Threading Insert 11.5 Tpi Nptf

Product Description

The VARGUS 51194 is a solid carbide laydown threading insert designed for cutting external NPTF threads at 11.5 threads per inch. It carries a TiN coating applied via PVD process, which extends cutting edge life across a broad range of workpiece materials. The insert uses a 3ER style designation with a 3/8-inch (9.53 mm) inscribed circle and a thickness of 3.6 mm. The 60-degree included angle and right-hand configuration make it suitable for standard tapered pipe thread profiles machined on CNC lathes and threading equipment. Machinists and tool-and-die professionals select this insert for precision pipe thread production work.

This insert is intended for external NPTF pipe threading operations conforming to ANSI B1.20.3-1976. The universal primary workpiece material compatibility covers a wide range of material codes including ferrous and non-ferrous metals. It fits standard 3ER insert pockets on compatible threading toolholders and is suited for both production and maintenance machining environments where consistent tapered pipe thread geometry is required.

Key Features

• Solid carbide substrate for rigidity and wear resistance during threading operations
• TiN PVD coating for extended tool life across universal workpiece materials
• Right-hand external NPTF thread profile at 11.5 TPI per ANSI B1.20.3-1976
• 3ER insert style with 3/8-inch inscribed circle and 3.6 mm thickness
• 60-degree included angle for standard tapered pipe thread form
• Single-tooth per side design for controlled chip load and thread accuracy

Compatibility

Designed for use in standard 3ER threading toolholders accepting a 3/8-inch inscribed circle laydown insert. Compatible with workpiece material codes H, K, M, N, P, and S as designated by the manufacturer.

Installation Notes

Installation and indexing of threading inserts should be performed by a qualified machinist with the machine fully powered down and the spindle locked. Use the appropriate torx or hex key per the toolholder manufacturer's specification to seat the insert securely without overtightening. Verify insert orientation and thread hand before engaging the workpiece. Follow applicable shop safety protocols and confirm thread geometry with a calibrated NPTF thread gauge after initial cuts.