An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5930-01-188-2683
NSN 5925-01-317-6170
NSN 5910-01-079-8132
NSN 5990-00-594-7291
NSN 6150-01-422-2013
NSN 5965-01-624-0785
NSN 4140-01-388-2007
NSN 5910-01-559-9149
NSN 6685-01-579-3636
NSN 5855-01-395-0676
NSN 6610-00-322-7873
NSN 6620-01-106-3553