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 5905-01-437-8495
NSN 6130-00-783-6779
NSN 5920-01-259-3408
NSN 6130-01-567-2383
NSN 6220-00-631-7113
NSN 5920-00-900-4924
NSN 6105-01-234-3545
NSN 4140-01-562-3999
NSN 6105-00-465-1137
NSN 5925-00-116-8706
NSN 6130-01-542-3373
NSN 5930-01-231-3376