Vargus 51807 Threading Insert 48 Tpi Un Solid Carbide

Product Description

The VARGUS 51807 is a solid carbide laydown threading insert designed for external UN thread cutting at 48 threads per inch (TPI). Manufactured to the 3ER insert style with a VKX grade designation, this insert features a PVD-applied TiN coating for extended wear resistance across a broad range of workpiece materials. The 60-degree included angle conforms to standard UN thread geometry per ANSI B1.1:74. With a 9.53 mm inscribed circle (3/8 inch) and a thickness of 3.60 mm, the 51807 is sized for precision threading operations on CNC lathes and screw machines.

This insert is intended for right-hand external thread turning applications producing UN-standard threads at 48 TPI. The VKX grade and TiN finish make it suitable for universal workpiece material groups, including ferrous, non-ferrous, stainless, and heat-resistant alloys, covering material codes H, K, M, N, P, and S. It is used by machinists and CNC turning specialists in production and job-shop environments where consistent thread form and tool life are required. Sold individually, with a minimum order quantity of 10 units.

Key Features

• 3ER insert style, size code 3, for laydown threading toolholders
• 48 TPI UN external thread form with 60-degree included angle per ANSI B1.1:74
• Solid carbide VKX grade with PVD TiN coating for broad material compatibility
• Right-hand cutting geometry for standard external thread turning
• 9.53 mm inscribed circle (3/8 inch) with 3.60 mm thickness
• Qualified to ISO 9001:2008 manufacturing standards

Compatibility

Designed as a direct-fit replacement for 3ER-style laydown threading insert seats compatible with 48 TPI UN external thread applications. Workpiece material compatibility spans groups H, K, M, N, P, and S per the manufacturer classification.

Installation Notes

Installation is performed by qualified machinists following standard insert indexing procedures for laydown threading toolholders. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Verify insert orientation and thread-form angle before commencing a threading pass. Follow applicable shop safety and machine guarding protocols during all tooling changes.