An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5985-00-180-1366
NSN 5935-01-465-5564
NSN 5910-00-258-8383
NSN 6320-01-262-8642
NSN 5935-00-613-6769
NSN 5915-01-290-2396
NSN 6650-01-327-3068
NSN 5945-01-046-0346
NSN 5895-01-600-8724
NSN 6105-00-171-6521
NSN 5935-01-470-2746
NSN 5950-01-634-0677