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 6320-01-082-2970
NSN 5975-01-564-4789
NSN 5935-01-375-3616
NSN 5945-01-530-0346
NSN 5996-00-205-2933
NSN 6320-01-116-3980
NSN 5835-01-602-0311
NSN 5945-01-043-7056
NSN 6130-01-127-0136
NSN 6645-01-629-9657
NSN 5950-01-415-6306
NSN 5999-00-566-0189