An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6650-01-421-4024
NSN 5985-00-242-7012
NSN 5960-01-224-8022
NSN 2925-00-585-9861
NSN 5910-00-964-1503
NSN 7035-01-620-9682
NSN 6105-01-512-7888
NSN 5925-01-533-6627
NSN 6110-01-228-8384
NSN 6145-00-691-3609
NSN 5855-01-505-2210
NSN 5999-01-123-2461