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 6150-00-611-2840
NSN 5855-01-513-1859
NSN 4140-01-607-4309
NSN 6240-00-849-5026
NSN 6105-01-523-7814
NSN 5998-01-554-3405
NSN 6685-01-305-4262
NSN 6620-01-205-6608
NSN 5855-01-503-5484
NSN 6620-00-203-9466
NSN 5855-00-962-5792
NSN 5945-00-929-4112