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It will depend on if a lube or dry torque, type of washer used. If lock washer is used then less torque is needed to not damage the lock washer. It should be about 170 ft/lbs max dry with flat washer, if it leaves an imprint in the metal (head or washer) it is too tight. In this case use less torque or down grade. Please note that the washer side is normally the side torqued, regardless of where the washer isi.e. head or threaded side, if concerned then washer both ends.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThe recommened torque depends upon the coating of the threads - are they lubricated?
Typically an M16 grade 8.8 (with 2mm pitch thread) if lubricated with a light machine oil would be torque loaded to 250Nm
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