Vargus 52216 Threading Insert 3IR 60 Deg 14-8 Tpi Carbide

Product Description

The VARGUS 52216 is a solid carbide laydown threading insert designed for right-hand internal threading operations. Built to the 3IR insert style, it cuts a partial profile 60-degree thread form across a range of 14 to 8 threads per inch (1.75 to 3.00 mm pitch), making it a versatile option for general threading work on a CNC or manual lathe. The insert carries a TiAlN PVD coating applied via physical vapor deposition, which improves surface hardness and heat resistance during cutting. With a 9.53 mm inscribed circle (3/8 inch) and a thickness of 3.60 mm, it fits standard 3IR toolholders. Licensed machinists, CNC operators, and toolroom technicians working in metal fabrication shops are the primary installers and users of this insert.

This insert is suited for internal threading passes on a wide range of workpiece materials. The manufacturer designates it as universal in primary workpiece material compatibility, covering material codes H, K, M, N, P, and S, which correspond to hardened materials, cast iron, stainless and heat-resistant alloys, non-ferrous metals, steel, and superalloys respectively. It performs in residential and commercial machine shops, production turning cells, and maintenance toolrooms where consistent thread form accuracy across varied material types is required. The partial profile 60-degree form means the insert follows the thread flanks without finishing the crest, allowing the crest to be formed by the pre-machined blank diameter.

Key Features

• Solid carbide construction with TiAlN PVD coating for elevated wear resistance and thermal stability
• Partial profile 60-degree thread form covers a broad TPI range of 14 to 8 (1.75 to 3.00 mm pitch) with a single insert
• Right-hand internal orientation for standard internal threading passes on CNC and manual lathes
• 9.53 mm (3/8 inch) inscribed circle fits standard 3IR toolholder pockets
• Universal workpiece material rating across steel, stainless, cast iron, non-ferrous, and superalloy classes
• ISO 9001:2008 manufactured to consistent dimensional standards

Compatibility

Designed as a direct-fit replacement for standard 3IR laydown threading toolholders accepting a 9.53 mm inscribed circle insert with a 3.60 mm thickness. No specific model numbers or system families were provided by the manufacturer for this listing.

Installation Notes

Indexable threading inserts are installed and changed by CNC operators or qualified machinists following machine lockout and spindle-stop procedures before any toolholder access. The insert must be seated fully and evenly in the pocket before the clamp screw is torqued. Always verify the insert hand orientation (right-hand internal) matches the programmed toolpath direction before initiating a threading pass. Consult the toolholder manufacturer's documentation and applicable shop safety standards when setting up threading operations.