An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6320-01-320-3305
NSN 5965-01-159-2694
NSN 5999-01-233-2066
NSN 5945-00-312-4265
NSN 6650-00-415-3024
NSN 5855-01-096-9294
NSN 6610-01-188-8163
NSN 5975-00-228-0227
NSN 6610-00-229-6742
NSN 6145-00-482-1724
NSN 6645-01-367-2581
NSN 5895-01-118-7652