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 5910-01-440-6907
NSN 6610-01-459-8192
NSN 4140-01-076-9775
NSN 5998-00-770-1975
NSN 6145-00-308-0247
NSN 6110-01-391-6497
NSN 6240-01-050-9156
NSN 6105-01-024-9907
NSN 6685-01-594-0212
NSN 5925-00-406-3103
NSN 5999-01-170-9895
NSN 5965-01-539-4841