we would suggest a locating system clamp with tapered surfaces.
They provide a 0.01mm locating repeatability that is better then the XYZ Mitee-bite clamps which is +/-0.01mm
The pin and the bushing have a center hole so that you can insert a cap screw to clamp the plate.
It's a combination of the following Spanclamps:
more information on other dimensions:
their exists also size M14