An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 7035-01-422-5297
NSN 5920-00-691-7727
NSN 6135-00-767-0331
NSN 5855-01-312-5160
NSN 6610-01-112-0447
NSN 5895-00-477-7823
NSN 6645-01-258-5558
NSN 5895-00-913-9767
NSN 5920-01-334-9848
NSN 6135-01-394-4160
NSN 6150-01-476-6327
NSN 5910-01-368-2792