6.2 Coefficients of friction / connection behavior and finish treatmentIn accordance with MBN VDA 235-101: 1997-07, a total coefficient of friction ofμ tot. = 0,08 to 0,14shall be set for all threaded parts.For similar parts with special configurations where a coefficient of friction cannot be determined, the finishtreatment shall also be carried out in such a way that corresponding parts without the special configurationwould achieve the relevant value range (e.g. for self-locking screws).with greater layer thicknesses shall not be used as sealings.Sealings may incorporate suitable additives for the adjustment of the required defined coefficientsof friction. The combination of sealings with integrated lubricants and subsequent lubricationshould be avoided, if possible.