An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5935-00-149-4201
NSN 5905-01-149-4636
NSN 6320-00-405-2348
NSN 6620-01-230-0197
NSN 6620-01-633-8443
NSN 5935-00-816-6807
NSN 6130-01-210-0498
NSN 5975-01-306-6236
NSN 5920-00-878-6438
NSN 6240-01-609-3662
NSN 6145-00-081-6686
NSN 5960-01-061-9166