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 6145-01-360-1698
NSN 5960-01-442-1770
NSN 5945-01-478-8120
NSN 2925-01-166-4589
NSN 4140-00-330-5841
NSN 4140-01-004-0566
NSN 5990-00-655-3065
NSN 6645-00-337-8298
NSN 5945-00-222-5258
NSN 5895-01-194-4456
NSN 5915-01-050-0531
NSN 5998-01-098-3532