An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5985-01-385-6473
NSN 5960-01-411-1825
NSN 6135-00-900-2139
NSN 6145-01-349-4918
NSN 5965-00-246-5612
NSN 5945-00-522-6870
NSN 5985-01-392-0926
NSN 6650-00-948-3647
NSN 5960-01-378-1729
NSN 6130-00-113-9338
NSN 6150-01-170-6968
NSN 6220-00-073-7330