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 5975-00-383-7679
NSN 5998-01-040-7875
NSN 5925-00-904-5763
NSN 5950-01-121-1171
NSN 5999-00-306-4691
NSN 5950-01-117-8798
NSN 5930-01-400-6126
NSN 5960-01-438-0245
NSN 5935-01-197-7366
NSN 6650-01-497-5782
NSN 5925-00-189-6467
NSN 5965-00-929-9415