Merit Brass K619-16 Pipe Locknut 1 in 316 Ss Threaded

Product Description

The MERIT BRASS K619-16 is a 1-inch pipe locknut machined from 316 stainless steel, designed to secure conduit fittings, bushings, or adapters in threaded piping assemblies. The female NPT straight locknut (FNPSL) end connection provides a reliable threaded engagement rated to 150 psi. At 1-13/16 inches in length and weighing just 0.17 pounds, this locknut is a compact but durable fastening component. The 316 stainless steel construction offers strong resistance to corrosion and chemical exposure, making it well suited for demanding service environments. Plumbers, pipefitters, and mechanical contractors install this type of hardware as part of threaded pipe runs where secure locking of fittings is required.

This locknut is used in threaded piping systems where a locking mechanism is needed to prevent fitting rotation or loosening under vibration or pressure. Typical applications include industrial plumbing, process piping, and mechanical systems where stainless steel is specified for corrosion resistance. The FNPSL connection conforms to ISO standards, supporting use in both domestic and internationally specified installations. It is appropriate for residential and commercial mechanical systems where 150 psi-rated threaded stainless components are called for.

Key Features

• 316 stainless steel construction for corrosion and chemical resistance
• Threaded FNPSL end connection rated to 150 psi
• ISO-compliant dimensions for broad fitment compatibility
• Compact 1-13/16 inch length suits tight installation clearances
• Lightweight at 0.17 pounds for easy handling during installation

Compatibility

Designed as an OEM-style replacement or new-installation locknut for 1-inch threaded pipe fittings in 316 stainless steel piping assemblies.

Installation Notes

Installation is typically performed by licensed plumbers or pipefitters working on threaded stainless steel piping systems. Shut off system pressure and drain the line before disassembling or installing any threaded components. Use appropriate pipe wrenches or strap wrenches rated for stainless fittings to avoid galling the threads. Follow applicable IPC or IFGC code requirements and manufacturer torque guidance for threaded stainless connections.