An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6610-00-622-0955
NSN 5996-01-509-1536
NSN 6240-01-411-7482
NSN 6685-00-456-8600
NSN 7035-00-763-6180
NSN 5930-01-554-5405
NSN 6135-01-620-8216
NSN 5920-01-155-1128
NSN 5855-01-010-4921
NSN 5965-01-046-9619
NSN 6110-01-584-6432
NSN 5996-01-554-1059