Clamping pin connections
n must be re-tightened after 25 operating hours.
Micro-encapsulated coated screws
n must be immediately re-tightened to the appropriate tightening
torque. The adhesive hardens within a short time.
n cannot be re-used.
Stainless steel screws
n A suitable lubricant must be applied to the screw thread before
assembly
n The friction coecient of 0.14 ... 0.15 must be complied with.
n Never tighten with an impact wrench
B.2 Tightening torques for bolted connections
The following tightening torques apply with all bolted connections
used by LEMKEN, unless specied otherwise:
Screws and nuts made of steel
Diameter Strength category
8.8 [Nm*] 10.9 [Nm*] 12.9 [Nm*]
M5 5.2 7.6 8.9
M6 9.0 12.0 14.0
M8 20.0 28.0 33.2
M10 38.9 54.7 72.0
M12 68.0 95.0 114
M14 108 152 183
M16 167 235 283
Clamping pin connection (Cone Lock
screws)
Micro-encapsulated coated screws
Stainless steel bolted connections
Tightening torques screws
en-GB | Item no. 17516276 | BA 01/2023-09 90
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