Fasteners of a component shall be implemented identically with regard to the type, length, type of thread, tightening torque, and bolt / screw head shapes.If fasteners cannot be implemented identically, confusion shall be ruled out.A clear differentiation and assignment of the fasteners shall be ensured. Options for clear differentiation and assignment are length differences for bolts / screws of at least 10 mm, different screw / bolt heads, widths across wrench flats or diameters, color marking.In the case of sandwich design / assembly for two components, the homogeneity need only be ensured for each individual component.Note:Sandwich design: Combined attachment points of component A and component B