An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6150-01-419-8144
NSN 4140-00-137-9633
NSN 5835-01-094-2662
NSN 5945-01-549-0228
NSN 5990-01-267-6971
NSN 2925-01-030-6580
NSN 6610-00-424-8780
NSN 6610-01-572-1715
NSN 6620-00-865-5103
NSN 5895-00-299-1601
NSN 6240-01-582-1227
NSN 5998-01-151-5103