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Metric Bolts - Tightening Torques

Recommended thightening torque metric bolts.

Maximum recommended tightening torque for coarse threaded metric steel bolts:

Metric Bolts - Typical Tightening Torques
Size
(mm)
Max. Tightening Torque (Nm)
Property Class
Grade 8.8Grade 9.8Grade 10.9Grade 12.9
M5 7.0 7.8 10.0 11.7
M6 11.8 13.3 17.0 19.9
M8 28.8 32.3 41.3 48.3
M10 57.3 64.1 81.8 95.7
M12 99.8 112 143 167
M16 248 277 354 413
M20 500 690 809
M24 865 1195 1395
M30 1719 2377 2774

Metric Bolts - Thightening Torques

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