Hi-Tech Industries License Plate Screws Slotted Hex Screw (Bulk 100/Pk). Stainless Steel Fasteners (1/4"x3/4") - Hard & Extremely Durable, and Will Look Brilliant for Years to Come! Slotted Hex Head - Easily Fastened Using a Flat Head Screw Driver or a 3/8 Drive Socket. Standard License Plate Screws: Fits Most Domestic Cars & Trucks License Plate Holes.168 Hour Marine Saltwater Submersion Tested & Passed! License plate screws are often not the subject of many interesting car conversations; however, they are necessary hardwares that every car & truck require and can affect the appearance of the vehicle over time. At first, most of us are just excited to put a plate on our vehicle so that we can drive it around and after a few short months, noticeable rust begins to appear on the screws and eventually leaching out on the license plates and bumper of our vehicles over time. After many years of neglect, the screws become corroded, brittle and difficult to remove. Don't let this happen to you. Don't neglect the finer details of your vehicle, opt for the Never Rust stainless steel fasteners and put these worries to rest. Our screws are 100% stainless and have been tested and submerged in marine saltwater for 168 hours without any rust or corrosion. WARNING : This product can expose you to chemicals which are known to the State of California to cause cancer.