Metal to metal seal
An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. 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 tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.
Classification: Aluminum tube or pipe fittings (couplings,elbows sleeves)
NSN 6220-01-421-4448
NSN 5999-00-317-6262
NSN 6320-01-435-5991
NSN 5998-00-517-9170
NSN 4140-00-542-4145
NSN 5945-01-219-1965
NSN 5960-01-612-6869
NSN 6320-01-213-3974
NSN 6105-00-925-2226
NSN 6645-01-336-6631
NSN 6645-00-935-7046
NSN 5905-01-048-1116