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 5998-01-021-5601
NSN 2925-00-724-9252
NSN 6685-00-494-3153
NSN 5999-00-467-4320
NSN 5960-00-921-3336
NSN 6645-01-116-2037
NSN 5925-01-448-9590
NSN 6685-01-494-6163
NSN 5960-01-483-9174
NSN 6685-01-020-2123
NSN 5935-01-390-0435
NSN 4140-00-003-8311