An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6320-00-937-5625
NSN 6240-00-705-7731
NSN 5990-00-660-8885
NSN 5965-01-131-0854
NSN 5998-01-059-3918
NSN 5965-01-331-9135
NSN 6685-01-509-3390
NSN 5960-00-517-9359
NSN 5975-00-009-2725
NSN 6650-01-363-6675
NSN 5895-01-444-4641
NSN 5975-01-322-8183