An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 7035-01-268-0933
NSN 6610-00-391-7888
NSN 5985-01-350-3454
NSN 5998-01-337-6815
NSN 5996-00-081-8057
NSN 5910-00-908-0402
NSN 6145-00-117-8861
NSN 5965-01-064-7496
NSN 7035-01-448-0716
NSN 5910-00-452-0436
NSN 6145-01-386-3718
NSN 6610-01-589-2552