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 6135-01-399-8230
NSN 6135-01-442-4581
NSN 5945-01-203-3256
NSN 5996-01-524-3052
NSN 5996-00-471-0540
NSN 6150-01-508-2558
NSN 5998-00-596-8869
NSN 5925-00-262-5651
NSN 5895-00-119-2506
NSN 6150-00-900-8128
NSN 5905-01-252-8915
NSN 6240-01-171-6452