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mechanicology.com
Metric Bolt Torque Chart – Class 8.8, Class 10.9, Class 12.9 - Mechanicology
These metric bolt torque charts show the ideal tightening torque for class 8.8, 10.9, and 12.9 bolts for both wet and dry tightening. The bolt’s class indicates its material strength, with higher numbers meaning higher tensile and yield strength. The classes are set by the International Standards Organisation or ISO.
Aug 5, 2021
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