Vargus 51156 Laydown Threading Insert Bspt 11 Tpi

Product Description

The VARGUS 51156 is a solid carbide laydown threading insert designed for external BSPT (British Standard Pipe Taper) thread cutting at 11 threads per inch. The insert features a TiN (titanium nitride) coating applied via PVD process, which improves surface hardness and wear resistance during threading operations. With a 55-degree included angle and a 9.53 mm inscribed circle, this insert follows the 3ER style geometry. It is sized at 3.60 mm thick and is intended for right-hand external threading. Machinists and CNC lathe operators in manufacturing and industrial machining environments install this insert into compatible toolholders for precision pipe thread production.

This insert is suited for threading BSPT profiles in a wide range of workpiece materials, covering universal material groups including ferrous metals, cast iron, stainless steel, non-ferrous metals, steel, and high-temperature alloys, corresponding to material codes H, K, M, N, P, and S. It is appropriate for both production and job-shop environments where repeatable pipe thread form accuracy is required on external diameters. The standard series designation and PVD TiN coating make this a general-purpose option across varied turning setups.

Key Features

• Solid carbide substrate with PVD TiN coating for extended tool life
• 3ER insert style, 11 TPI, 55-degree included angle for BSPT thread form
• 9.53 mm (3/8 inch) inscribed circle, 3.60 mm thickness
• Right-hand external thread cutting orientation
• Universal workpiece material compatibility: material codes H, K, M, N, P, S
• Conforms to B.S.21:1985 thread standard; manufactured under ISO 9001:2008

Compatibility

Designed as an OEM-style replacement threading insert for 3ER-style toolholders configured for external BSPT thread turning applications.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Power down and lock out the machine spindle before seating or replacing the insert. Ensure the toolholder pocket is clean and free of chips before installation. Follow toolholder manufacturer torque and clamping specifications when securing the insert.