An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5910-01-232-9766
NSN 6135-01-493-8375
NSN 6650-00-754-2276
NSN 6105-01-196-4782
NSN 6620-00-723-2075
NSN 5915-01-448-2073
NSN 7035-01-310-2587
NSN 6620-01-556-1695
NSN 5920-00-152-4003
NSN 5910-00-202-1056
NSN 5945-00-615-9218
NSN 2925-00-441-8252