You can find a metric bolt torque chart through the CNC Machines website. CNC Machines is a manufacturer of modern technologies and works to make sure this chart, among many others, is accurately maintained on their website.
In addition to the metric bolt torque chart, CNC Machines offers multiple other charts and tables on their website. These include conversion charts, calculators and tips. Additional charts are available on the Southwest Wisconsin Technical College website for reference. The charts and tables from both websites are similar in layout and information, which make them easy to compare for consistency and accuracy of data.