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 5950-01-441-5682
NSN 6645-00-171-9251
NSN 2925-01-645-2948
NSN 5915-00-539-7673
NSN 6135-00-437-5182
NSN 6145-01-081-9809
NSN 4140-01-085-1944
NSN 5975-01-565-7434
NSN 6145-01-377-3714
NSN 5895-01-535-5518
NSN 6135-01-120-9812
NSN 6650-01-406-3086