An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5920-00-753-5113
NSN 5950-00-387-5741
NSN 5996-00-655-0305
NSN 6220-01-466-4346
NSN 5930-01-460-0839
NSN 6240-00-926-6914
NSN 5915-01-243-3583
NSN 6110-01-326-1339
NSN 6320-00-857-4073
NSN 6685-01-545-7910
NSN 5999-00-276-9299
NSN 5925-00-833-8291