An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5905-00-883-9347
NSN 6150-00-111-3194
NSN 6105-01-634-0322
NSN 5960-00-817-5088
NSN 5835-00-931-4906
NSN 5996-01-415-3291
NSN 5950-00-264-3620
NSN 6145-01-263-9062
NSN 6320-00-593-0379
NSN 4140-01-259-9260
NSN 5930-00-681-1145
NSN 5855-01-410-8979