Vargus 53821 Laydown Threading Insert 6 Tpi Acme Solid Carbide

Product Description

The VARGUS 53821 is a laydown threading insert designed for internal Acme thread cutting at 6 threads per inch (TPI). Built from solid carbide and finished with a TiAlN (titanium aluminum nitride) coating applied via PVD process, this insert delivers reliable wear resistance across a wide range of workpiece materials. The 3IR insert style features a right-hand cutting orientation and a 3/8-inch inscribed circle. The 29-degree included angle matches the Acme thread form standard. Machining professionals and tool-and-die shops install this insert into compatible laydown threading toolholders for precise internal Acme thread production.

This insert is suited for internal Acme threading operations on lathes and turning centers in both production and job-shop environments. The universal primary workpiece material rating covers a broad spectrum of materials including cast iron, non-ferrous alloys, stainless steel, high-temp alloys, and carbon and alloy steels. It conforms to ANSI B1.5:1988 Acme thread standards, making it appropriate for general mechanical, lead screw, and power transmission thread applications where Acme form geometry is required.

Key Features

• Solid carbide substrate for high rigidity and dimensional stability during threading cuts
• TiAlN PVD coating improves heat resistance and extends tool life across varied materials
• 6 TPI Acme thread form with 29-degree included angle per ANSI B1.5:1988
• Right-hand internal threading orientation in 3IR laydown style
• 3/8-inch inscribed circle for compatibility with standard 3IR toolholders
• Universal material grade suitable for steel, stainless, cast iron, non-ferrous, and high-temp alloys

Compatibility

Designed for use in 3IR-style laydown threading toolholders. Compatible with workpiece material codes H, K, M, N, P, and S per the manufacturer classification, covering cast iron, non-ferrous, stainless, high-temp, carbon steel, and alloy steel applications.

Installation Notes

Installation is performed by machinists on CNC or manual lathes equipped with a compatible 3IR laydown threading toolholder. Ensure the machine spindle is fully stopped and the toolholder pocket is clean and free of debris before seating the insert. Torque the clamping screw to the toolholder manufacturer specification. Verify insert orientation and thread hand match the programmed toolpath before cutting.