A fitting used with a union nut and thread piece to form a union.
NSN 5985-01-430-4395
NSN 5935-01-228-4606
NSN 5996-01-227-0767
NSN 6145-01-634-0388
NSN 6620-00-857-8263
NSN 6645-01-294-6403
NSN 5835-01-050-7882
NSN 6685-01-212-3972
NSN 5950-01-023-2904
NSN 6135-00-087-5300
NSN 5990-01-259-7138
NSN 6110-01-116-7250