An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5998-01-588-9130
NSN 7035-00-679-9027
NSN 5996-01-145-2784
NSN 7035-01-245-9585
NSN 5960-01-632-6576
NSN 6130-00-689-4395
NSN 5985-00-943-3533
NSN 6685-00-186-9190
NSN 5996-00-525-1777
NSN 6240-01-202-5649
NSN 4140-01-549-8229
NSN 6145-00-854-1892