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 6240-01-384-3887
NSN 5990-01-080-0097
NSN 5999-00-302-3762
NSN 5990-01-223-9414
NSN 5998-00-007-7057
NSN 5975-01-417-6799
NSN 5950-00-189-2432
NSN 6240-01-249-9840
NSN 6130-00-738-1027
NSN 5975-01-514-3768
NSN 7035-01-381-6185
NSN 2925-01-157-9204