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 2925-01-545-2717
NSN 5915-01-454-1707
NSN 5945-00-200-2311
NSN 5895-01-150-3321
NSN 5920-01-418-1821
NSN 6650-01-658-7194
NSN 5895-01-205-0910
NSN 5855-00-862-3345
NSN 5950-01-381-1361
NSN 5985-00-246-9414
NSN 6685-01-277-9296
NSN 5996-00-878-0273