An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5965-00-897-5560
NSN 6135-01-528-6896
NSN 4140-01-579-5774
NSN 7035-00-104-7613
NSN 5996-01-504-0263
NSN 6130-01-242-1588
NSN 5950-01-045-1701
NSN 5835-00-814-1359
NSN 6650-00-768-8875
NSN 5835-01-184-6878
NSN 5996-01-233-1614
NSN 6610-00-156-5699