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 6110-01-200-0997
NSN 5950-01-656-1137
NSN 6130-01-134-5454
NSN 5925-00-446-2464
NSN 5998-01-343-7085
NSN 5905-01-032-7462
NSN 6620-01-361-8685
NSN 5990-01-386-5561
NSN 6240-01-351-0911
NSN 6240-00-326-2966
NSN 6620-01-265-0632
NSN 5945-00-316-5300