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 6645-01-575-4181
NSN 6685-01-539-2345
NSN 5855-01-057-7818
NSN 6240-01-206-4809
NSN 5925-01-432-1698
NSN 6220-01-341-5322
NSN 6610-00-176-5486
NSN 5855-01-451-9380
NSN 7035-00-116-1900
NSN 5895-00-820-1997
NSN 6645-00-435-5610
NSN 5950-01-090-0789