An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6620-01-044-3371
NSN 6105-01-278-9830
NSN 5945-01-303-3059
NSN 5998-00-284-3804
NSN 6685-01-645-5828
NSN 2925-01-123-5856
NSN 5915-00-404-9241
NSN 5935-01-290-9808
NSN 5999-00-490-7887
NSN 5998-00-916-1871
NSN 5965-01-555-8007
NSN 6650-01-557-7444