Here's another picture of my 1,200 pound magnet, it weighs 4 pounds on the scales. It was shipped with a bottle of "thread lock" stuff. Thinking about the eye-nut twisting off of the bolt, I figured it'd be best to drill a hole and use a cotter pin. I started the hole, and burnt up 2 bits, asked a buddy (maintenance guy friend) to finish the job on their milling machine. He brought it back last evening with a "roll pin" for me to use. In a way, I think it'd be best with a cotter pin. Either way, the eye-nut should never twist off accidentally.