Boss end has a flange on it
No other part numbers with same form, fit, and function found.
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 5910-01-632-4132
NSN 6240-01-478-1286
NSN 6610-01-334-3157
NSN 5925-01-579-6447
NSN 5920-00-232-3951
NSN 6610-00-511-6201
NSN 5930-01-421-5510
NSN 5925-01-365-0436
NSN 6150-00-044-1746
NSN 5905-01-053-7977
NSN 5965-01-495-9711
NSN 5915-01-090-8013