85
Attachment:Table for bolt’s tightening torque
If not specified, select the tightening torque from the below table:
Unit:N·m
Bolt’s
diameter
Grade
4.6 5.6 6.6 8.8
6 4~5 5~7 6~8 9~12
8 10~12 12~15 14~18 22~29
10 20~25 25~31 29~39 44~58
12 35~44 44~54 49~64 76~107
14 54~69 69~88 83~98 121~162
16 88~108 108~137 127~157 189~252
18 118~147 147~186 176~216 260~347
20 167~206 206~265 245~314 369~492
22 225~284 284~343 343~431 502~669
24 294~370 370~441 441~539 638~850
27 441~519 539~686 637~784 933~1244
Note:·Use entirely 8.8 grade bolt in the important joint position.
·Bolt’s grade can be found in the head of the bolt, if it can’t be found, the grade is 8.8.