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 5855-01-385-8846
NSN 5996-01-557-5337
NSN 5910-00-707-3268
NSN 5960-00-581-2389
NSN 5835-01-043-1576
NSN 5999-00-285-2987
NSN 6320-01-279-0343
NSN 5998-00-737-1220
NSN 6105-01-429-1502
NSN 5935-01-185-1680
NSN 5950-00-990-9588
NSN 6650-00-751-9958