An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6685-00-434-9156
NSN 6110-01-006-6177
NSN 7035-00-349-8571
NSN 6685-01-491-1572
NSN 5935-00-032-1279
NSN 5835-00-073-0790
NSN 5990-00-230-8981
NSN 5935-01-048-9520
NSN 5905-01-212-2792
NSN 6645-00-869-0850
NSN 7035-01-227-2546
NSN 5965-00-051-6434