An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5895-01-435-6624
NSN 5905-00-633-1652
NSN 5895-01-242-4839
NSN 5835-01-350-0566
NSN 5930-01-230-7876
NSN 6650-00-028-2218
NSN 6130-01-440-5166
NSN 5945-00-426-0777
NSN 5925-01-054-3284
NSN 6685-01-490-0962
NSN 6620-01-476-7355
NSN 6105-01-302-0573