An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5925-01-265-0314
NSN 6130-01-202-9304
NSN 6320-01-370-5222
NSN 5935-01-322-5502
NSN 6240-01-104-5085
NSN 2925-00-583-9669
NSN 5910-00-234-0586
NSN 6150-01-229-2075
NSN 5855-01-484-9948
NSN 6320-00-164-4087
NSN 5905-01-347-7105
NSN 5915-01-426-8862