An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5998-00-416-1111
NSN 5835-01-278-4683
NSN 5935-00-317-7844
NSN 6130-00-137-3966
NSN 6620-01-012-2852
NSN 5905-00-865-3250
NSN 6145-01-509-0207
NSN 6220-01-466-3035
NSN 5855-00-631-4565
NSN 5855-00-235-2676
NSN 6105-01-500-0891
NSN 5855-01-490-0745