General Screw Installation & Notes:Use either a wax or grease on the threads to help prevent stripping while going into new or hard material. Some screws that are included in the our kits remain phillips heads but are still stainless steel. We have done this for strength, as a result of our field testing, on small diameter screws (2mm and 2-56" dia). This may include some chassis screws and differential screws. All other remain socket head. Please refer to your assembly manual for screw locations.