A fitting used with a union nut and a tailpiece to form a union.
NSN 6685-01-057-7720
NSN 6135-01-438-4320
NSN 5855-00-361-0167
NSN 5950-01-570-5389
NSN 4140-01-003-2501
NSN 6105-01-050-3799
NSN 6240-01-616-6813
NSN 5985-01-297-3360
NSN 5930-01-529-8142
NSN 5965-01-023-0245
NSN 6105-01-161-3799
NSN 6610-01-512-8154