A fitting used with a union nut and a tailpiece to form a union.
NSN 6610-01-502-9907
NSN 6145-01-089-7207
NSN 5996-00-280-8980
NSN 5985-01-141-0875
NSN 6610-01-542-2276
NSN 5990-01-097-4329
NSN 5965-01-537-5562
NSN 5835-01-197-0390
NSN 5996-00-265-7067
NSN 5999-00-395-2715
NSN 6135-01-119-0720
NSN 6105-01-321-7466