A fitting used with a union nut and a tailpiece to form a union.
NSN 5835-01-191-3405
NSN 5915-00-970-1419
NSN 6220-00-551-0704
NSN 6610-00-045-8132
NSN 6650-01-289-0524
NSN 5930-01-316-0977
NSN 6650-00-372-0669
NSN 5996-00-116-7498
NSN 5985-01-058-4505
NSN 5998-01-415-1418
NSN 5835-00-269-2232
NSN 6220-01-443-3637