A fitting used with a union nut and thread piece to form a union.
NSN 5965-01-538-0698
NSN 2925-01-543-0073
NSN 6220-01-184-9829
NSN 6685-01-185-6167
NSN 5960-00-597-2680
NSN 5895-00-196-2868
NSN 6105-01-540-0664
NSN 5975-01-092-5713
NSN 5935-01-523-9691
NSN 7035-01-139-5707
NSN 6645-01-463-3441
NSN 2925-01-041-2360