Hi! Have no opportunity to measure at the moment and am willing to prepare some plates for Mini to repair damaged on rear subframe. Rear radius arm spindle has a play where it sits in subframe, am going to align wheels, take of nut from spindle, and weld a plate to avoid play, otherwise tires are rubbing on inside as nut can’t take that stress alone to keep spindle in place. What is usuall diameter of bolts (not metric thread), where on nut I can use 19mm socket? Would be great I You could say size in millimeters.