A fitting used with a union nut and a tailpiece to form a union.
NSN 5930-01-603-2436
NSN 5975-01-290-3717
NSN 5945-01-311-6729
NSN 6110-01-607-2773
NSN 6620-00-753-0745
NSN 5960-01-573-6483
NSN 5855-01-441-3189
NSN 5996-01-370-9886
NSN 6645-01-023-8020
NSN 6150-00-591-2002
NSN 5960-00-061-8105
NSN 6645-01-274-3384