A fitting used with a union nut and thread piece to form a union.
NSN 5990-00-650-9008
NSN 5935-01-476-3031
NSN 6650-01-511-9568
NSN 5930-01-229-6505
NSN 2925-00-888-9551
NSN 6610-01-406-4985
NSN 6220-01-467-2543
NSN 5950-01-606-9819
NSN 5999-01-544-6500
NSN 6105-01-371-1635
NSN 5965-00-139-4870
NSN 6610-01-532-4217