An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5965-01-632-7929
NSN 6610-01-625-6855
NSN 5945-01-197-8631
NSN 6145-01-103-9680
NSN 5910-01-136-5632
NSN 6650-00-248-4895
NSN 5960-00-472-9435
NSN 5935-00-552-6559
NSN 6650-01-189-7040
NSN 6220-01-458-7068
NSN 7035-01-633-9537
NSN 6240-01-517-4492