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The PARKER 210P-8 is a brass pipe lock nut designed to secure threaded pipe connections in industrial plumbing and fluid-system applications. It features a 1/2 inch female FNPTF (Female National Pipe Taper Fuel) thread and is rated for up to 1,000 psi maximum working pressure. The brass construction resists corrosion and handles a wide service temperature range, making it a reliable mechanical fastener for pressurized line assemblies. Plumbers, pipefitters, and industrial maintenance technicians install this hardware as part of threaded pipe fitting assemblies where a locking element is required to maintain joint integrity under pressure.
This lock nut is suited for residential and commercial plumbing systems, fuel lines, hydraulic assemblies, and other fluid-handling installations where FNPTF threaded connections are specified. Its 1/2 inch thread size is one of the most common sizes encountered in pipe fitting work, and the brass material is compatible with a wide range of media including water, fuel, and hydraulic fluid. It meets SAE J530 and SAE J531 standards, which are commonly referenced in fluid connector and pipe fitting specifications.
Designed as an OEM-style replacement or new-installation component for threaded pipe fitting assemblies using 1/2 inch FNPTF connections in plumbing, fuel, and fluid-handling systems.
This fitting is installed by licensed plumbers or pipefitters in accordance with applicable plumbing codes such as the IPC or IFGC. Shut off system pressure and drain the line before disassembling or installing any threaded pipe fitting. Use appropriate thread sealant or tape as required by the application and applicable code. Do not over-tighten brass fittings, as excess torque can crack or distort the material.
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