An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5910-01-367-6155
NSN 2925-01-446-6976
NSN 5998-01-428-9545
NSN 6650-01-293-5557
NSN 5950-00-141-5973
NSN 5998-01-490-5834
NSN 6150-00-779-5547
NSN 6135-00-505-0679
NSN 5910-00-447-9833
NSN 5945-00-760-7233
NSN 5960-01-544-1273
NSN 5935-01-288-0157