An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6150-00-908-0782
NSN 5895-01-508-3630
NSN 2925-01-412-9520
NSN 6135-01-215-1245
NSN 5905-00-300-5112
NSN 5950-01-374-1185
NSN 5905-01-367-9808
NSN 5990-00-402-7721
NSN 5975-01-657-1834
NSN 2925-01-110-1467
NSN 5855-00-107-7993
NSN 6110-00-078-8565