An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6105-00-945-6072
NSN 6610-00-783-8786
NSN 6145-01-026-2340
NSN 6105-01-415-1422
NSN 6320-01-309-7615
NSN 6145-01-652-6876
NSN 6220-00-419-6152
NSN 6240-00-518-3541
NSN 5915-01-655-1413
NSN 2925-00-328-2073
NSN 7035-01-564-4617
NSN 6320-01-021-6633