An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5950-00-516-2436
NSN 5998-00-155-6002
NSN 5930-01-572-4210
NSN 5990-01-328-7396
NSN 5985-01-269-1260
NSN 6650-01-605-2302
NSN 6620-01-376-3744
NSN 5915-01-398-5533
NSN 5910-01-239-2037
NSN 5855-01-381-7493
NSN 5945-01-273-9003
NSN 5920-01-595-9534