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PLUG CAP 3/8-18NPT 304 SS SPRAY ARM

American National Standard Pipe Thread standards, often called National Pipe Thread ("NPT") standards for short, are U.S. national technical standards for screw threads used on threaded pipes and pipe fittings. They include both tapered and straight thread series for various purposes including rigidity, pressure-tight sealing, or both. The various types are each named with a symbol and a full name; examples of the symbols include NPT, NPS, NPTF, NPSC, and others.

A plug is an item that (1) provides a fitted closure for an opening designed to ensure a tight seal such as for a sink or a bottle, or for a hole or a space (2) completes an electrical connection. The plug may be removable (as for portable equipment), require a tool for assembly and removal, or serve as a permanent electrical joint between two points.

A washarm (wash arm) or sprayarm (spray arm) is a part of a washing or cleaning system within a piece of equipment or assembly containing a series of spray nozzles that facilitate a forced dispersion of liquid into a spray. The arms typically rotate or spin to allow optimal coverage and multiple arms may work in tandem.