Amazing how hard it was to find this with metric Tap Size and Metric Hole Size.
For some stupid reason all the data had Metric Tap with, Imperial/Guage size/Imperial Decimal, etc, etc.
Now I need to know if the bolts are coarse thread or fine??
Here is another that actually shows there is a differance between thread depth for softer Brass, Aluminium etc (75% thread depth) and harder steel (50% thread depth)