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 6110-01-570-0550
NSN 5920-01-377-9518
NSN 6220-01-525-5956
NSN 5996-01-609-1891
NSN 5985-01-547-9399
NSN 5895-00-990-6542
NSN 5975-01-104-6366
NSN 5996-01-383-7018
NSN 6150-01-507-3943
NSN 5990-01-339-9238
NSN 6610-01-520-3164
NSN 6240-01-314-1226