This Beautiful one piece stainless 1/4-20 Thumbscrew works perfectly with the FenceClip camera adapter.  We ship a lot of these screws, there are lots of cameras with standard Quarter 20 threads.  These screws are carved from stainless steel billet.  The crown is sculpted for light weight.  These are 1000 year screws.
 
This screw works perfectly with FenceClip and FenceClip mini camera adapters.  Use it for Mevo, Yi, Sony.