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 5910-00-030-6548
NSN 5835-01-114-3194
NSN 6220-01-367-1877
NSN 4140-01-028-9602
NSN 6240-01-650-5348
NSN 6650-01-581-2390
NSN 5996-01-382-9710
NSN 5965-00-810-2204
NSN 6105-01-336-2789
NSN 5990-00-013-6862
NSN 5960-01-103-5476
NSN 5855-00-149-0766