Metric Bolt Torque Table
Estimated with clamp load as 75% of proof load
as specified in ISO 898-1
Property
Class
8.8
       8.8       
10.9
       10.9       
 12.9 Socket Head 
Cap Screw
12.9
 Minimum Tensile 
Strength MPa
M6 - M16:  800
M20 - M30:  830
10401220
Nominal Size
and
Thread Pitch
Bolt Torque Specs in Newton Meters - Nm
DryLubedDryLubedDryLubed
M5 x 0.806.14.68.86.710.37.7
M6 x 1.0010.47.81511.217.613.1
M7 x 1.0017.613.125.118.929.422
M8 x 1.2525.419.137.627.342.632.1
M10 x 1.50503872548464
M12 x 1.75886612694146110
M14 x 2.00141106201150235176
M16 x 2.00218164312233365274
M18 x 2.50301226431323504378
M20 x 2.50426319609457712534
M22 x 2.50580435831624971728
M24 x 3.0073655210527891231923
M27 x 3.0010798091544115818051353
M30 x 3.50146310972092157024461834
M33 x 3.50199014932849213733282497
M36 x 4.00255719183659274442763208
 Lubed means cleaned dry bolts lubricated with a standard medium viscosity 
 machine oil. Lubricate all contact areas of the bolts and washers. Lubricating
 the bolts is the suggested method.  Thread Engagement


Note: Much effort has been made to make sure that these metric bolt torque specs are accurate. However, it is the user's responsibility to verify that the provided information is correct before using it.