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 6610-00-850-4910
NSN 5985-00-874-3946
NSN 6610-01-345-7364
NSN 6610-00-456-0485
NSN 6110-00-809-0995
NSN 5960-00-927-6716
NSN 6610-01-512-2025
NSN 5960-01-399-4327
NSN 5950-01-634-0677
NSN 6645-01-463-3441
NSN 5975-01-235-1611
NSN 6135-01-186-4010