An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5965-00-170-5254
NSN 5835-01-424-0054
NSN 6145-00-081-3993
NSN 6130-01-274-3601
NSN 5855-00-252-5743
NSN 6650-01-644-2547
NSN 6135-01-168-2944
NSN 5945-00-988-1965
NSN 6620-00-854-0961
NSN 6620-01-125-0794
NSN 6105-00-511-7197
NSN 5945-01-504-7624