A fitting with pipe threads having a female connection inside of a male connection, used in conjunction with another fitting, to connect in the same line, two pipes of different sizes.
NSN 5999-01-624-3201
NSN 5945-01-444-0971
NSN 5910-01-169-6396
NSN 6620-00-658-6588
NSN 6320-01-512-2031
NSN 6240-00-944-1296
NSN 5835-00-302-5296
NSN 4140-01-486-8953
NSN 5996-00-107-5357
NSN 5985-00-434-5771
NSN 5990-01-443-2931
NSN 6650-01-588-5458