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 7035-01-100-2796
NSN 5920-01-547-7597
NSN 2925-00-578-4068
NSN 6685-00-689-5063
NSN 5960-01-137-2329
NSN 5965-01-426-8325
NSN 6645-01-467-9983
NSN 6645-01-495-0939
NSN 6145-01-478-1722
NSN 6320-00-937-5625
NSN 6240-01-239-4218
NSN 5855-01-272-3660