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 4140-01-538-8281
NSN 6220-01-441-5834
NSN 6620-00-115-9050
NSN 6320-00-894-1644
NSN 5915-00-910-2873
NSN 4140-01-357-5135
NSN 6650-01-555-8349
NSN 5925-00-908-2843
NSN 6685-01-148-4588
NSN 6145-00-653-2448
NSN 5996-01-068-2886
NSN 5895-01-249-6305