An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 7035-01-510-8787
NSN 6220-01-525-8719
NSN 4140-01-647-0707
NSN 5990-01-393-4808
NSN 5835-00-469-3395
NSN 6135-00-010-5275
NSN 5930-01-336-3116
NSN 5835-01-564-5575
NSN 7035-00-079-7189
NSN 6110-01-621-5387
NSN 5990-01-298-6616
NSN 5925-01-442-8589