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 5998-01-227-3134
NSN 6240-01-654-9278
NSN 4140-01-043-8556
NSN 5935-01-351-6453
NSN 5945-00-537-5029
NSN 6130-01-116-1042
NSN 5855-01-120-7831
NSN 5985-00-248-4978
NSN 5960-01-444-2205
NSN 5835-01-336-0462
NSN 5985-01-134-2899
NSN 5975-01-056-5036