Size: 48mm-iv; bushing diameter: 1.8898 inch
No other part numbers with same form, fit, and function found.
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 5925-00-999-9320
NSN 5935-01-399-8732
NSN 5905-00-204-0469
NSN 5935-01-341-8112
NSN 5998-01-348-3540
NSN 5945-00-398-1072
NSN 5999-01-537-0533
NSN 5950-01-367-2926
NSN 5965-01-200-6613
NSN 5985-01-541-2715
NSN 5975-01-534-7492
NSN 5835-01-167-1824