[@ken]

True, though it’s sad that Imperial units are still driving global standards. On the other hand an M6x1.0 screw comes pretty close in profile to a 1/4″-20 screw. It may bind at some point but I suspect that it will still hold. I wonder how easy it is for people in Europe and Asia to obtain Imperial sized hardware. Also, I have a number of GoPro mounts and every other piece of hardware in the mounts is metric…