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 6240-00-918-2426
NSN 6645-01-062-0905
NSN 5999-01-534-7592
NSN 6620-01-423-0833
NSN 5965-01-447-2992
NSN 5905-01-263-0837
NSN 5930-01-341-5725
NSN 5920-00-930-1212
NSN 6240-01-437-6888
NSN 6645-00-070-6358
NSN 7035-01-619-7560
NSN 4140-01-108-9084