An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5960-00-346-7902
NSN 7035-01-113-6492
NSN 6685-01-479-5030
NSN 6105-01-617-5860
NSN 5965-01-385-1617
NSN 5835-00-572-7445
NSN 5920-00-578-3750
NSN 5915-01-111-9376
NSN 5895-01-048-8618
NSN 5999-01-338-4704
NSN 5950-01-572-7954
NSN 5915-00-141-0410