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 6105-00-947-4473
NSN 5945-01-476-7351
NSN 5930-01-189-0827
NSN 5999-00-629-8151
NSN 5950-01-527-2755
NSN 5998-01-468-6656
NSN 5920-01-179-5289
NSN 5910-01-184-5240
NSN 6145-01-076-3699
NSN 6685-00-292-9963
NSN 6130-01-106-4267
NSN 6610-00-283-8047