An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5960-00-786-3219
NSN 6145-01-371-5176
NSN 5835-00-493-8115
NSN 5996-00-279-5806
NSN 6620-00-006-6418
NSN 6320-01-532-4026
NSN 5920-01-322-2572
NSN 6620-01-358-7531
NSN 6645-00-720-3953
NSN 5998-01-165-0450
NSN 2925-01-177-1598
NSN 5996-01-258-5888