An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 4140-00-218-0804
NSN 7035-00-760-5479
NSN 4140-00-862-5644
NSN 6150-00-146-3746
NSN 5925-01-121-0401
NSN 5855-01-020-7982
NSN 5835-01-317-4840
NSN 4140-01-435-7515
NSN 5895-01-141-9974
NSN 6685-01-487-7905
NSN 6320-00-459-8973
NSN 5965-01-595-6134