An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5950-01-289-2649
NSN 5915-01-056-5141
NSN 6130-00-672-1456
NSN 5960-00-675-3439
NSN 5920-01-177-9200
NSN 6110-01-287-6450
NSN 6240-00-892-5188
NSN 6145-01-218-6029
NSN 7035-01-036-0236
NSN 6105-00-485-5939
NSN 5950-01-202-8456
NSN 5965-01-460-9743