An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5960-00-148-4493
NSN 5915-01-170-5086
NSN 5935-00-929-8832
NSN 5910-01-535-7126
NSN 5835-00-092-1136
NSN 5910-00-111-3343
NSN 5910-01-400-0891
NSN 6620-01-125-3932
NSN 5985-00-198-6904
NSN 6110-00-500-0397
NSN 6130-01-445-3613
NSN 6650-01-503-1144