Lg. Chicago Screw on Wood
Screw Posts are also known as Chicago Screws. Both halves have a Flat head and they join together snugly. They fit best when the material is just a bit thicker that their stated size. For example, a 1/4″ Screw Post nicely attaches through a 5/16″ board, but will be left loose and unable to tighten on a board that is even slightly under 1/4″!
Either side of the smaller chicago screw shank will fit through the clipboard clip holes, so you don’t have to worry about that. It will not extend that much past 1/4″. If your material is too thin, the screw post will not tighten. In this case, you will need to look at rivets.
If you just cannot get the chicago screws to work. It may be time to try riveting. Use a rivet that is not too much thicker than the material. The rivet will pull the pieces together and hold them firmly.
We don’ sell rivet tools, but most of your local hardware and home improvement stores should carry them Rivets are cheap – experiment!.