John Guest PM05821S - 1/8" NPTF Male x 5/16"O/D Stem Adaptor

The John Guest PM05821S is a male adapter fitting that converts a 1/8" NPTF (National Pipe Taper Fuel) threaded connection to a 5/16" outside diameter (O/D) stem.

This adapter is typically used in applications where a connection needs to be made between a threaded pipe and a tube. The 1/8" NPTF male end of the adapter can be screwed into a female NPTF threaded connection, while the 5/16" O/D stem can be inserted into the end of a tube.

John Guest is a leading manufacturer of plastic fittings and tubing, and their products are commonly used in applications such as water filtration, beverage dispensing, and pneumatic systems.