An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6240-00-879-0771
NSN 5895-01-380-2092
NSN 7035-00-329-4015
NSN 6645-01-160-7707
NSN 6320-00-115-0883
NSN 5905-01-215-8652
NSN 4140-01-634-0330
NSN 5905-00-950-3288
NSN 5965-01-488-6695
NSN 5965-01-248-9705
NSN 5990-01-134-2859
NSN 6645-01-329-0871