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 5990-01-498-0641
NSN 5985-01-580-0566
NSN 5975-01-501-9824
NSN 5996-00-555-9508
NSN 5998-00-840-5463
NSN 5985-01-142-2298
NSN 5835-01-268-1924
NSN 6145-00-076-9324
NSN 7035-01-418-5499
NSN 6320-00-025-9910
NSN 5999-00-614-1666
NSN 5996-01-067-8303