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 6645-01-045-1075
NSN 6135-01-619-1582
NSN 6220-01-463-7490
NSN 2925-01-656-8217
NSN 5905-00-557-3792
NSN 5996-00-239-4782
NSN 5996-01-559-4921
NSN 5999-00-187-8958
NSN 5996-01-566-0344
NSN 6135-01-244-5580
NSN 6105-00-621-8878
NSN 5925-01-359-6329