An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6145-01-501-2582
NSN 2925-01-311-7840
NSN 6620-01-408-4464
NSN 5895-01-192-3138
NSN 4140-01-120-9477
NSN 5895-01-421-7715
NSN 5835-01-629-2044
NSN 5999-01-619-7768
NSN 6105-00-253-9279
NSN 6130-00-387-2051
NSN 6650-01-124-4314
NSN 5935-01-349-7993