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 6220-00-915-6592
NSN 6135-01-010-0891
NSN 6135-01-334-3935
NSN 5920-00-303-5290
NSN 6650-01-423-8131
NSN 6645-00-547-4388
NSN 5920-00-644-3285
NSN 6240-01-259-4015
NSN 5950-01-322-5513
NSN 6320-01-526-5534
NSN 6240-00-052-0786
NSN 5950-01-606-9819