HANGCHA CDD15-WS - Attachment: List of Bolt Tightening Torques

55
Unit: Nꞏm
Bolt diameter
Class
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: All important connections are made with grade 8.8 bolts.
The bolt grade can be found at the head, if not, it is 8.8 grade.