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 5990-01-334-4111
NSN 6645-01-522-5144
NSN 6650-01-512-9650
NSN 6130-00-585-9448
NSN 5985-01-126-5753
NSN 5975-01-113-1069
NSN 6240-01-570-5976
NSN 5925-01-329-1660
NSN 6685-01-275-4701
NSN 5895-01-250-2813
NSN 2925-01-646-9112
NSN 5930-00-109-0952