If it is too long there is a risk of it boring into the camera body. You might overcome excess length by adding a firm thicker pad. The nut should be thin if possible, so that the weight will rest on the wider flange. A light weight camera can acceptably rest on the bolt only. Some model flanges are not acceptable because they do not have the hollow core to pass the bolt through.
Some parts are hard to find.
The Ultimate stacking microphone stand has the advantage that 3 small cameras can be stacked together in a very small space. This stand has no provision for tilt. This could be a large disadvantage if used for cameras that have no provision for tilt.