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 6650-00-947-4380
NSN 5996-01-641-0124
NSN 5835-00-827-1904
NSN 6105-00-527-8571
NSN 6130-01-263-2457
NSN 5920-01-650-6510
NSN 6220-00-770-7658
NSN 5965-01-071-3704
NSN 5905-00-186-6086
NSN 5999-00-836-6763
NSN 4140-00-256-1471
NSN 6220-01-503-5420