An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5945-01-441-0377
NSN 6105-01-250-3591
NSN 5935-00-573-5709
NSN 5925-01-408-8765
NSN 5998-01-224-8144
NSN 5945-01-283-8067
NSN 5930-00-456-3477
NSN 5999-00-782-6197
NSN 5990-01-574-2522
NSN 5905-01-055-5582
NSN 5935-01-529-7868
NSN 5985-01-365-9296