Vargus 53669 Laydown Threading Insert 3ER 40 Tpi Un

Product Description

The VARGUS 53669 is a solid carbide laydown threading insert designed for external UN thread cutting at 40 threads per inch (TPI). It features a 3ER insert style with a 60-degree included angle, a TiAlN coating applied via PVD process, and a VTX manufacturer grade. The inscribed circle measures 9.53 mm (3/8 inch) and the insert thickness is 3.60 mm. Designed for right-hand threading operations, this insert is suited for use on CNC lathes and turning centers where consistent thread profile accuracy is required. Licensed machinists and CNC operators working in production or job-shop environments are the primary installers.

This insert is intended for external UN thread cutting on a wide range of workpiece materials. The universal primary workpiece material classification covers material codes H, K, M, N, P, and S, making it applicable across steel, stainless steel, cast iron, non-ferrous metals, high-temp alloys, and similar materials. It is suited for standard-series threading applications where ANSI B1.1:74 UN thread form compliance is required. Typical use cases include threading on shafts, fasteners, fittings, and other externally threaded components in production machining environments.

Key Features

• Solid carbide construction with TiAlN PVD coating for wear resistance and heat tolerance
• VTX grade optimized for universal workpiece material compatibility across H, K, M, N, P, and S material codes
• 3ER insert style, 60-degree included angle, right-hand cut for standard UN external threads
• 40 TPI thread pitch conforming to ANSI B1.1:74 UN thread standard
• Single tooth per side design for precise thread form engagement
• Inscribed circle of 9.53 mm (3/8 inch) with 3.60 mm thickness for laydown toolholder compatibility

Compatibility

Designed for use in laydown threading toolholders accepting the 3ER insert style with a 3/8-inch inscribed circle. Conforms to ANSI B1.1:74 and is manufactured under ISO 9001:2008 quality standards.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Power down and lock out the machine before seating or replacing the insert. Use the appropriate torx or hex key as specified by the toolholder manufacturer to secure the insert clamp - do not overtighten by hand estimation. Verify insert seating and thread profile with a thread gauge before resuming production cuts.