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 6135-00-973-5632
NSN 5855-00-165-3093
NSN 5925-01-098-7036
NSN 5960-01-515-4791
NSN 5990-01-076-8901
NSN 6240-01-531-4231
NSN 5985-01-221-4387
NSN 6645-00-595-5431
NSN 6610-01-385-1771
NSN 5975-01-077-0509
NSN 5915-00-086-8762
NSN 5950-00-156-7287