An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6685-01-120-1102
NSN 6620-00-905-6590
NSN 5965-01-448-6055
NSN 6610-01-025-8283
NSN 6320-01-519-8767
NSN 5910-01-299-6605
NSN 6685-01-287-9974
NSN 5950-00-009-0334
NSN 6105-01-236-5290
NSN 5930-01-089-5731
NSN 5855-01-147-6024
NSN 6105-01-653-0093