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 6145-01-348-3779
NSN 5998-01-020-8383
NSN 6320-01-253-9585
NSN 5930-00-134-5745
NSN 6620-01-583-1058
NSN 5855-01-415-3987
NSN 2925-00-862-8550
NSN 2925-00-837-3948
NSN 5950-01-215-2983
NSN 5996-01-108-4306
NSN 6650-01-150-8101
NSN 5930-01-606-9576