Fender Flare Mounting Bolts Installation components that ensure a high-quality and hassle-free fender flare installation. Technical Specification. The bolts, rivnuts, and washers are made of stainless steel, ensuring that the exterior-facing fasteners won't rust or deteriorate due to weather exposure, preserving the overall appearance. The screw thread diameter is M5 – one of the most optimal sizes for both fender flare and wide body kit installations. The screw head size fits perfectly into the fender pocket. Rivnuts are an excellent solution for creating a clean, reliable thread in your vehicle's body panel, allowing you to easily and securely mount fender flares or any other body components. This allows the use of clean, standard-thread bolts instead of unprofessional self-tapping screws or other improvised methods. With this installation system, you can easily remove and reattach the fender at any time. If one breaks, replacement is simple—just use a standard M5 hex key. Each bolt comes with a rivnut and washer. Simply select the required number of bolts, and you'll receive everything together. More about rivnuts and their installation: Of course, you can use other types of bolts for overfender installation, such as self-tapping screws or bolts with regular washers, but rivnuts give you the option to fasten the components with clean, nice-looking bolts quickly and easily. Don't worry if you don't have a special rivnut tool – you can still install them using just a standard M5 bolt, a bigger nut, and a couple of washers. Once you've measured and marked the hole locations for the overfender, drill them with a 5mm diameter drill bit. If you have a rivnut tool, simply use it to install the rivnut into the hole. If you don't have a rivnut tool: Insert the rivnut into the hole, then take a bolt and slide 2-3 washers onto it. After that, place an M6/M7 nut on top (the key is that it should be wider than the bolt thread). Screw this entire bolt assembly into the rivnut. When the bolt becomes tight and can no longer be turned by hand, use a wrench and tighten the bolt until the rivnut compresses on the other side of the panel – that's it! The rivnut must be pressed tightly so that it does not wobble or spin around its axis. Once you've installed the rivnuts in all the holes on the fenders, simply use the bolts and hex screws to secure the fenders to the wing. Don't forget to use the U Rubber Channel for the fender edges for a perfect fit, which is available for purchase in our store.