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 5905-00-189-1682
NSN 5996-01-631-8490
NSN 6650-01-186-2426
NSN 5920-01-144-9826
NSN 5975-01-551-3260
NSN 4140-01-133-8267
NSN 5965-01-055-7645
NSN 5999-01-551-0792
NSN 6645-00-296-8310
NSN 6645-01-025-1002
NSN 5996-01-491-9000
NSN 6145-01-444-1668