An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5905-00-403-9714
NSN 7035-01-491-0266
NSN 5990-01-411-5930
NSN 6320-00-925-0558
NSN 5935-00-283-8322
NSN 6150-00-317-5498
NSN 5996-00-844-6227
NSN 5985-01-657-7559
NSN 6685-00-057-2777
NSN 5935-00-628-3163
NSN 5910-01-014-5944
NSN 5855-00-821-7512