Vargus 51924 Threading Insert 8 Tpi 3/8 Inch Ic Un Carbide

Product Description

The VARGUS 51924 is a solid carbide laydown threading insert designed for external UN thread cutting on CNC lathes and turning centers. Manufactured to the 3ER insert style with a 3/8 inch inscribed circle, it cuts at 8 threads per inch (TPI) with a 60-degree included angle conforming to the UN thread standard. The VTX grade features a PVD-applied TiAlN coating that resists heat and wear across a broad range of workpiece materials. Right-hand cutting geometry and the standard series profile make it a direct fit for production threading operations where consistent thread form and insert life matter.

This insert is suited for external threading on materials spanning steel, stainless, cast iron, non-ferrous alloys, and high-temperature alloys, as reflected by its universal primary workpiece material classification covering material codes H, K, M, N, P, and S. Typical applications include threading shafts, fittings, fasteners, and hydraulic components on manual or CNC turning equipment. The 3ER insert style seats in standard laydown threading toolholders, making it common in job shop and production environments where UN-standard external threads are routinely produced.

Key Features

• Solid carbide substrate with PVD TiAlN coating for extended tool life and heat resistance
• 8 TPI cutting edge for UN-standard external threads
• 60-degree included angle meets ANSI B1.1:74 thread form requirements
• 3/8 inch inscribed circle in the standard 3ER laydown insert style
• Right-hand cutting geometry for conventional external thread turning
• Universal material compatibility across steel, stainless, cast iron, non-ferrous, and superalloy workpieces

Compatibility

Designed for use in standard laydown threading toolholders that accept the 3ER insert style. Compatible with CNC and manual lathes configured for right-hand external UN thread cutting at 8 TPI.

Installation Notes

Threading inserts should be seated and clamped per the toolholder manufacturer's torque specifications using the appropriate torque wrench. Power down and lock out the machine spindle before changing inserts. Verify insert seating and shim condition before resuming cuts, and confirm thread pitch with a calibrated thread gauge after the first pass. Disposal of worn carbide inserts should follow local regulations for carbide and coated tooling waste.