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 2925-00-513-6644
NSN 5945-01-107-8614
NSN 6650-01-106-1868
NSN 5915-01-592-7471
NSN 4140-01-444-1033
NSN 5895-01-627-7321
NSN 5990-01-529-6347
NSN 4140-01-602-2706
NSN 5895-01-505-4724
NSN 5925-00-457-5364
NSN 6610-01-535-8757
NSN 4140-00-260-9521