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Metric Bolt Torque table
Metric Bolt Torque Table Estimated with clamp load as 75% of proof load as specified in ISO 898-1
8.8
10.9
12.9 Socket Head Cap Screw
Property Class
Minimum Tensile Strength MPa
M6 - M16: 800 M20 - M30: 830
1040
1220
Nominal Size and Thread Pitch
Bolt Torque Specs in Foot Pounds or (Inch Pounds)
Dry
Lubed
Dry
Lubed
Dry
Lubed
M5 x 0.80
(54)
(41)
(78)
(59)
(91)
(68)
M6 x 1.00
(92)
(69)
(133)
(99)
(156)
(116)
M7 x 1.00
(156)
(116)
(222) (167)
(260)
(195)
M8 x 1.25
(225)
(169)
(333) (242)
(377)
(284)
M10 x 1.50
37
28
53
40
62
47
M12 x 1.75
65
49
93
69
108
81
M14 x 2.00
104
78
148
111
173
130
M16 x 2.00
161
121
230
172
269
202
M18 x 2.50
222
167
318
238
372
279
M20 x 2.50
314
235
449
337
525
394
M22 x 2.50
428
321
613
460
716
537
M24 x 3.00
543
407
776
582
908
681
M27 x 3.00
796
597
1139
854
1331
998
M30 x 3.50
1079
809
1543
1158
1804
1353
M33 x 3.50
1468
1101
2101
1576
2455
1842
M36 x 4.00 2366 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 1886 1415 2699 2024 3154
Figure 48
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