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 5965-01-327-9234
NSN 5930-00-407-7036
NSN 6150-00-188-2958
NSN 5835-01-476-8210
NSN 6645-01-073-5302
NSN 2925-00-152-1825
NSN 6610-00-562-9174
NSN 5935-01-512-2321
NSN 6650-01-082-1533
NSN 5855-01-208-1471
NSN 6650-00-578-6543
NSN 6320-01-389-8128