An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5960-01-094-4134
NSN 5925-00-968-0558
NSN 6110-01-128-3050
NSN 6110-00-196-8813
NSN 5895-00-479-4560
NSN 6610-01-400-3880
NSN 4140-01-314-1979
NSN 5920-01-462-2517
NSN 5915-01-480-9755
NSN 5925-01-359-9719
NSN 5950-01-423-8936
NSN 2925-00-497-7808