Everyone should be careful when using lag bolts for steps. About ten years ago that is all one of my good friends would use instead of screw in steps. We were hunting his place one cold dec. morning and as I was climbing the tree one of the bolts pulled out allowing my boot to slide off of the end. Next thing I know I am laying on the ground on top of my bow. Once I stood up and started to look myself over I realized that on the way down another bolt had stuck into my leg through my pants and had torn about a 6" long gash in the back of my thigh. My bow was tied off to my bow rope, laying at the base of the tree, when I landed on it I broke the sight and three arrows in my quiver. At the time of the accident I weighed right at 200# so I don' t think my weight should have been too much for the bolt. My friend and I spent the rest of the day (after I got stitches) replacing his lag bolts with screw in stairs. I have not had any problems with stairs since I started using them 15 yrs. ago. Sorry for such a long post, I just don' t want to see this happen to anyone else.