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 5920-01-507-1165
NSN 6320-01-622-2456
NSN 5985-01-314-6589
NSN 6620-01-446-7290
NSN 4140-01-634-0330
NSN 5945-00-189-0765
NSN 5975-01-653-7893
NSN 7035-01-145-5059
NSN 6150-01-388-0264
NSN 5930-00-953-5395
NSN 6240-01-535-6520
NSN 5855-01-479-8598