Vargus 51383 3ER Laydown Threading Insert 14 Tpi Un

Product Description

The VARGUS 51383 is a solid carbide laydown threading insert designed for external UN thread cutting at 14 threads per inch (TPI). Built to the 3ER insert style with a 60-degree included angle, this insert carries a TiAlN coating applied by PVD process, delivering thermal resistance and extended tool life in demanding turning operations. The inscribed circle measures 3/8 inch (9.53 mm) and the insert thickness is 3.60 mm. Rated for right-hand external threading, the 51383 is used by machinists and CNC lathe operators producing UN-standard threaded components across a broad range of workpiece materials.

The 51383 fits standard 3ER toolholders and is suited for threading operations on lathes and turning centers in job shop, production, and maintenance machining environments. The VTX manufacturer grade and universal material compatibility rating make it appropriate for carbon steel, stainless steel, cast iron, non-ferrous alloys, and high-temperature alloys. It conforms to ANSI B1.1:74 thread standards and is manufactured under ISO 9001:2008 quality certification, making it a reliable choice for shops holding close thread tolerances on UN fastener profiles.

Key Features

• Solid carbide construction with PVD-applied TiAlN coating for heat and wear resistance
• 14 TPI UN external thread profile with 60-degree included angle
• 3ER insert style, size code 3, inscribed circle 3/8 inch (9.53 mm)
• Right-hand cut, single tooth per side geometry
• Universal primary workpiece material compatibility: carbon steel, stainless, cast iron, non-ferrous, and superalloys
• Conforms to ANSI B1.1:74; manufactured under ISO 9001:2008

Compatibility

Designed for use in standard 3ER-style laydown threading toolholders. Compatible across workpiece material groups H, K, M, N, P, and S as designated by the supplier material code classification.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the correct torque wrench and insert screw for the toolholder manufacturer's specification. Inspect the insert seat and clamping pocket for chips or debris before installation to ensure proper seating and accurate thread form.