An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5915-00-250-4007
NSN 6685-01-528-7585
NSN 6610-00-968-7007
NSN 5945-01-610-2539
NSN 6130-01-634-0603
NSN 5950-01-066-3603
NSN 5905-01-542-8614
NSN 6105-01-392-0500
NSN 5930-00-026-1665
NSN 5990-01-517-7848
NSN 6150-01-218-7591
NSN 5915-00-689-6872