Pocket Guide to Tightening Technique
should be marked according to their Bolt Grade – a classification standard in a twodigit system where the first digit refers to the minimum tensile strength in 100 N/mm2 and the second digit indies the relation between the yield point and the minimum tensile strength. For example: Bolt Grade desig nates a screw with 800 N/mm2 minimum tensile strength and a yield point of x 800 ...