An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6320-01-279-0343
NSN 5925-00-964-9654
NSN 5930-01-539-4438
NSN 6610-01-633-8931
NSN 7035-01-317-7186
NSN 5920-00-221-5131
NSN 5965-01-587-8444
NSN 5985-00-416-2926
NSN 5999-01-210-1948
NSN 6105-01-463-8557
NSN 5950-01-422-2924
NSN 6150-01-010-2988