Automotive Manual PDF

The maximum tightening torques are: Only applicable to shaft screws with metric standard and fine threads acc. to DIN 13, sheet 13 and nuts with height of 0,8 x d acc. to DIN 934 and only for a µ total = 0.125 (screws phosphatized, screws untreated or galvanized. Lubrication condition: unlubricated and also oiled). For cadmium-plated screws or nuts (µ total = 0.08 to 0.09) the tightening torque with screw material at the same level of utilization ca. must be 30% less than shown in the table. The values specified in this table apply to all screw connections conforming to the aforementioned conditions.
(more…)

[Read more →]