• Always tighten the joint by hand, and never use pneumatic tools.• Use the correct tightening technique, that is do not jerk. Tighten the screwin a slow, flowing motion.• Maximum allowed total deviation from the specified value is 10%!Oil-lubricated screws with slotted or cross-recess head screwsThe following table specifies the recommended standard tightening torque foroil-lubricated screws with slotted or cross-recess head screws.Tightening torque (Nm)Class 4.8, oil-lubricatedDimension0.25M2.50.5M31.2M42.5M55.0M6Oil-lubricated screws with allen head screwsThe following table specifies the recommended standard tightening torque foroil-lubricated screws with allen head screws.Tightening torque (Nm)Class 12.9, oil-lubric-atedTightening torque (Nm)Class 10.9, oil-lubric-atedTightening torque (Nm)Class 8.8, oil-lubricatedDimension--6M5--10M6403424M8806747M1014011582M12340290200M16670560400M201150960680M24Lubricated screws (Molycote, Gleitmo or equivalent) with allen head screwsThe following table specifies the recommended standard tightening torque forscrews lubricated with Molycote 1000, Gleitmo 603 or equivalent with allen headscrews.Tightening torque (Nm)Class 12.9, lubricated iTightening torque (Nm)Class 10.9, lubricated iDimension3528M87055M1012096M12280235M16550460M20Continues on next page556 3HAC044266-001 Revision: -© Copyright 2013 ABB. All rights reserved.7 Reference information7.4 Screw jointsContinued
