An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6130-01-649-8053
NSN 6145-01-228-4262
NSN 5999-01-289-2114
NSN 5990-00-491-1338
NSN 5855-00-928-1912
NSN 6645-01-642-3637
NSN 5910-01-157-9362
NSN 6110-01-023-3568
NSN 2925-00-395-8751
NSN 5915-01-527-0712
NSN 5835-00-337-7801
NSN 5925-01-240-8035