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What size screws do I need for a license plate?


When it comes to attaching a license plate to your vehicle, using the correct size screws is essential for ensuring that the plate is securely fastened and compliant with local regulations. In this article, we will explore the typical screw sizes used for license plates, the materials you might need, and some tips for installation.


Typical Screw Sizes for License Plates


Most vehicles use standard screw sizes for license plate installation. The most common sizes are:



  • 1/4 inch x 20 screws: These are the most frequently used screws for license plates in many vehicles.

  • 6 mm x 1.0 screws: Commonly found in European vehicles, these screws are also suitable for license plates.

  • Self-tapping screws: These can be used if your vehicle does not have pre-drilled holes for license plates.


Materials Needed


In addition to screws, you may need the following materials for a successful installation:



  • Washers: These help distribute the load of the screw and prevent damage to the license plate.

  • Plastic or rubber spacers: Useful for preventing rattling and ensuring a snug fit.

  • Tools: A screwdriver or a socket wrench, depending on the type of screws you are using.


Installation Tips


Here are some helpful tips to ensure your license plate is installed correctly:



  • Check local regulations: Some states have specific requirements for license plate installation, including the type of screws used.

  • Use the right tools: Ensure you have the correct screwdriver or wrench to avoid stripping the screws.

  • Do not overtighten: Tightening screws too much can crack the license plate or damage the mounting area.


By following these guidelines, you can ensure that your license plate is securely attached and compliant with regulations. If you have any further questions or need assistance, feel free to reach out to us at Kevin's Autos!


Frequently Asked Questions

What size screws to use for a license plate?


MAXIMUM COMPATIBILITY: Our license plate fasteners are the standard size of 1/4" diameter x 3/4” long self tapping screws that will fit most vehicles that use nylon/plastic screw retainers.



What size screws do wall plates use?


Standard slotted screws are known as 6-32 oval head screws. They feature a slot in a slightly rounded top (except for specialty screws) and come in a wide variety of lengths. The two most common sizes of wall plate screws are 5/16” and 1/2”.



What size screws do I need?


Pick the screw length: Ideally, you should choose a fastener that's about half as long as the material it's going into. If the screw is less than half the length of the receiving material, it won't anchor properly. If you pick a screw that's much longer than half, you may damage the other side of the material.



Do license plates come with screws?


Most license plates come with self-tapping screws that are specifically designed for use with plastic. However, if you're attaching your license plate to a metal plate bumper, you may need to use bolts and nuts instead.



What size is a #14 screw?


Screw Dimensions

"A" Flat Head"A" Pan Head
SizeMaxT max
100.3850.137
120.4380.153
140.5070.175



What size are numbered screws?


US Machine Screw Diameters

SizeNominal Thread Diameter
DecimalNearest Fractional
#00.060"1/16"
#10.073"5/64"
#20.086"3/32"



What do you screw a wall plate into?


INSTALLING THE WALL PLATES
The simplest is just the plate itself, which can be mounted with screws directly into a solid supportive wall like wood or metal. For less structural surfaces, like plaster or drywall, a mounting bracket is recommended to strengthen the attachment points.



What size screws for number plates?


The license plate screws are the standard size of 6mm diameter and 18mm long, fit for most family cars and trucks using nylon/plastic screw holders, but not fit for metal threaded holes, please check your vehicle size before your ordering. This license plate fastener kit to be durable and easy to install.



What screws are best for number plate?


POLYTOPS® number plate screws are particularly popular for securing vehicle registration plates but are also commonly used in many general applications. The matching plastic tops give an aesthetically pleasing colour matching fixing.



Should I stick or screw my number plate?


Screws are easy to remove in case you need to change plates again in the future, but they can be less secure against theft unless you use special security screws. The problem with those is that you lose the easy removability. Sticky pads are very secure and are the method recommended in number plate regulations.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.