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 5905-00-481-3877
NSN 6645-01-429-6768
NSN 5945-01-447-3456
NSN 5920-01-027-0660
NSN 5985-01-529-4487
NSN 6135-01-341-9814
NSN 6645-01-467-8481
NSN 5945-01-427-3790
NSN 5960-00-422-3197
NSN 5835-01-442-6482
NSN 5975-01-094-6943
NSN 5905-01-358-3222