An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5925-01-571-1997
NSN 5998-00-039-5092
NSN 6645-01-376-2336
NSN 5960-00-502-6708
NSN 6135-01-032-8887
NSN 5915-00-401-6384
NSN 5998-01-514-4592
NSN 6150-00-183-0972
NSN 6650-00-754-2276
NSN 6610-01-023-1816
NSN 5855-00-494-9581
NSN 5998-01-633-3115