An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6105-00-452-3855
NSN 6645-01-600-5653
NSN 5945-01-051-8576
NSN 6620-01-176-3530
NSN 5930-00-358-3225
NSN 6110-01-033-8401
NSN 6240-00-903-4660
NSN 5935-01-136-1343
NSN 4140-00-498-6867
NSN 6110-01-450-7467
NSN 6110-01-533-7768
NSN 6130-01-423-4095