An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 2925-00-333-4702
NSN 6620-00-269-8950
NSN 5835-00-378-1429
NSN 5960-01-083-3936
NSN 5915-01-170-2751
NSN 6110-00-118-1260
NSN 5960-01-503-0362
NSN 5996-01-203-6787
NSN 2925-01-292-9248
NSN 5998-00-761-4707
NSN 5835-01-424-4577
NSN 6135-01-141-4916