Metric Bolt Torque Table Estimated with clamp load as 75% of proof load as specified in ISO 898-1
Property Class	8.8		10.9		12.9 Socket Head  Cap Screw
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
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.