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 5950-00-061-4680
NSN 4140-01-586-5845
NSN 7035-00-902-8995
NSN 6620-00-485-4136
NSN 5910-00-383-9557
NSN 5990-00-900-4142
NSN 5985-01-245-9064
NSN 5960-00-331-0173
NSN 4140-01-417-3022
NSN 5990-01-550-7827
NSN 4140-01-423-0731
NSN 6645-01-534-3148