An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6135-00-643-4843
NSN 6240-00-539-9770
NSN 5950-00-888-9673
NSN 5835-01-050-7882
NSN 2925-00-945-0792
NSN 5990-00-011-2994
NSN 5910-00-412-9687
NSN 5945-01-510-4686
NSN 5965-00-113-9613
NSN 5996-00-285-3727
NSN 5935-01-150-4806
NSN 6320-01-578-6006