A fitting used with a union nut and a tailpiece to form a union.
NSN 5920-01-173-4108
NSN 5975-00-170-3623
NSN 5960-01-614-8005
NSN 6650-01-165-2175
NSN 5910-00-900-4929
NSN 5945-01-548-3740
NSN 5895-00-682-9339
NSN 6105-01-607-6572
NSN 5945-01-645-1045
NSN 6650-01-651-2324
NSN 6645-01-449-1824
NSN 6685-01-523-5624