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 2925-01-495-1178
NSN 5925-01-388-5917
NSN 6620-01-625-2855
NSN 5910-01-287-9194
NSN 5975-01-147-1453
NSN 5910-01-324-1567
NSN 5985-01-237-9455
NSN 5985-01-600-2383
NSN 6145-01-095-6556
NSN 5905-01-369-8189
NSN 5855-01-618-1921
NSN 7035-00-371-7749