4. Bolts and nuts should be able to be matched. After the bolts and nuts are tightened with a torque wrench (25N.m), there is no obvious dezincification of the thread.
4. The bolts and nuts should be capable of actual matching. After tightening the bolts and nuts with a torque wrench (25N. m), there is no obvious dezincification of the screw teeth.
4. Bolts and nuts should be able to match. After the bolts and nuts are tightened with a torque wrench (25N.m), there is no obvious dezincification of the screw teeth.