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 6320-01-378-6191
NSN 5999-01-573-6120
NSN 5950-01-436-1517
NSN 5835-01-347-8714
NSN 2925-01-502-5896
NSN 6650-00-754-2276
NSN 6610-01-453-4269
NSN 6150-01-400-0692
NSN 5905-00-197-7674
NSN 5999-01-326-3676
NSN 2925-01-273-4898
NSN 6130-01-268-2119