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 4140-00-322-9987
NSN 5910-01-126-5992
NSN 5945-01-425-2986
NSN 6220-01-633-6592
NSN 5950-01-469-6424
NSN 5920-00-285-0903
NSN 5990-00-543-2755
NSN 6220-01-401-5337
NSN 6645-01-222-7268
NSN 2925-01-294-9216
NSN 5930-00-608-7667
NSN 5950-01-190-3481