What is the best hardware to hang 120 lbs on the wall?

Answer 1

That's a heavy load. When you're hanging that much weight, it's a good idea to attach the support brackets to the studs, the vertical pieces of lumber to which the plasterboard (or Sheetrock or wallboard or dry wall, whatever they call it in your neck of the woods) is attached. But if you can't, you could use either a few molly bolts or toggle bolts. The largest molly bolts can support up to 50 pounds -- assuming your walls are in good condition. So, you'd need AT LEAST three of them. That gives you 25 percent derating, meaning 25 percent more support than you think you need. (Maybe you should use FOUR!) You could also use toggle bolts, which are really the best wall anchors. A small (0.125") toggle bolt can support 50 pounds in 3/8" dry wall and 100 pounds in 1/2" drywall -- if the wall is in good condition! But don't use plastic expansion anchors, especially if the load will not be completely in the down direction. If the load will pull away from the wall even the least bit, the plastic expansion anchors will pull out eventually.