An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6135-01-315-9214
NSN 5935-01-541-4597
NSN 6610-01-100-3662
NSN 5965-01-550-7505
NSN 6610-01-517-1901
NSN 5915-01-006-4125
NSN 5855-01-235-5491
NSN 5855-01-180-5369
NSN 5855-01-594-7809
NSN 5930-01-234-5798
NSN 5905-00-278-5764
NSN 5835-00-223-7235