Boss end has a viton o-ring, thread size on both ends is 0.375.
An adapter having standard pipe threads on one end or an unthreaded end designed to accommodate a pipe. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a pipe or pipe fitting to a boss or boss fitting in a straight line on items such as tanks, housing, valve fittings, or the like. See also adapter bushing and coupling, pipe.
Classification: Other fittings nesoi of iron or nonalloy steel
NSN 7035-00-215-3272
NSN 6685-01-177-8648
NSN 6130-01-628-1198
NSN 7035-01-029-7221
NSN 5950-01-577-0001
NSN 6610-01-053-6781
NSN 5910-00-360-2334
NSN 7035-01-387-0493
NSN 5905-01-374-2979
NSN 5895-00-389-7400
NSN 5945-01-623-0387
NSN 6685-00-626-4296