![mazda 6 number plate holder mazda 6 number plate holder](https://i.ebayimg.com/images/g/OQYAAOSwbShdHhkS/s-l300.jpg)
Why don’t all automakers use the same screw size for their vehicles? Your guess is as good as ours, but as noted earlier, the most common license plate screw size is 1/4-14-3/4 inch. There is a wide variety of screws on the market, and they are made from different materials and come in different dimensions to meet the various requirements of different car brands and vehicle models.