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 6145-01-468-6252
NSN 6685-00-540-9017
NSN 5998-00-528-9032
NSN 6145-01-057-0962
NSN 5935-00-594-7793
NSN 5855-01-648-2674
NSN 6130-00-361-7114
NSN 7035-01-013-9889
NSN 6105-01-426-7906
NSN 5985-01-541-6983
NSN 5950-01-536-0047
NSN 6685-01-148-0812