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 5895-01-014-1382
NSN 5999-01-243-8496
NSN 6135-01-648-4875
NSN 5855-00-896-4047
NSN 5910-01-336-8511
NSN 7035-01-629-2277
NSN 5990-00-932-3070
NSN 5985-00-253-4708
NSN 5935-01-314-0705
NSN 6645-01-127-0039
NSN 5965-01-093-0642
NSN 5905-01-480-6863