Metric Bolt Torque Chart

 

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
1040 1220
Nominal Size
and
Thread Pitch
Bolt Torque Specs in Newton Meters - Nm
Dry Lubed Dry Lubed Dry Lubed
M5 x 0.80 6.1 4.6 8.8 6.7 10.3 7.7
M6 x 1.00 10.4 7.8 15 11.2 17.6 13.1
M7 x 1.00 17.6 13.1 25.1 18.9 29.4 22
M8 x 1.25 25.4 19.1 37.6 27.3 42.6 32.1
M10 x 1.50 50 38 72 54 84 64
M12 x 1.75 88 66 126 94 146 110
M14 x 2.00 141 106 201 150 235 176
M16 x 2.00 218 164 312 233 365 274
M18 x 2.50 301 226 431 323 504 378
M20 x 2.50 426 319 609 457 712 534
M22 x 2.50 580 435 831 624 971 728
M24 x 3.00 736 552 1052 789 1231 923
M27 x 3.00 1079 809 1544 1158 1805 1353
M30 x 3.50 1463 1097 2092 1570 2446 1834
M33 x 3.50 1990 1493 2849 2137 3328 2497
M36 x 4.00 2557 1918 3659 2744 4276 3208

 

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