An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5855-01-323-5394
NSN 6320-01-383-9979
NSN 5905-01-020-6406
NSN 6645-01-383-6514
NSN 6110-00-798-4794
NSN 6145-01-519-8210
NSN 6130-01-601-5215
NSN 7035-01-531-0468
NSN 6240-00-832-6867
NSN 5835-00-471-2660
NSN 5975-00-099-9312
NSN 5996-01-481-2630