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 6145-01-617-3773
NSN 2925-01-182-0227
NSN 6105-01-510-8848
NSN 6220-01-352-5425
NSN 6685-01-100-3012
NSN 7035-01-429-7954
NSN 5895-01-129-0118
NSN 5985-00-857-9920
NSN 5920-00-397-2212
NSN 6610-01-065-1073
NSN 5895-00-027-3444
NSN 5990-01-131-9055