An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5905-01-439-4672
NSN 5999-00-755-4636
NSN 5996-00-856-2732
NSN 5985-01-422-2552
NSN 5930-00-978-4799
NSN 5915-01-476-8178
NSN 5855-01-150-9970
NSN 5920-00-185-9587
NSN 7035-00-238-3662
NSN 6105-00-804-3241
NSN 5905-00-067-6755
NSN 5895-00-288-5878