In most Honda models sold in the United States and Canada, license plates mount with standard 1/4"-14 UNC screws, typically around 3/4 inch in length. European and other market vehicles generally use metric M6 screws with lengths around 12–16 mm. Exact size can vary by bumper design and whether you’re using a frame or aftermarket Brackets, so verify your specific vehicle’s mounting hardware before buying replacements.
Common sizes by market
Here are the sizes you’re most likely to encounter, depending on where your Honda was designed for sale and how you’re mounting the plate.
- United States and Canada: 1/4"-14 UNC machine screws, typically 3/4" long (some setups use 1" screws), often paired with washers. These are the most common for factory and aftermarket license plate brackets.
- Europe and other non-U.S. markets: metric M6 x 1 screws, commonly around 12–16 mm in length, used with European plate brackets or factory installations.
- Variations: Some aftermarket frames or soft-mount kits may use self-tapping or different lengths to accommodate thicker frames or bumper designs. Always confirm with the mounting kit instructions.
Whether you’re replacing lost hardware or installing a new plate, the takeaway is to match thread size (UNC vs metric), screw diameter, and length to your car’s mounting holes and any frame you’re using. If in doubt, consult your owner’s manual, check the hardware that came with your plate or frame, or measure the plate thickness and bumper clearance before purchasing.
How to verify the right screw size for your Honda
The following steps help you identify the exact screws you need for your specific model and market.
- Check the owner’s manual or the OEM license plate bracket packaging for the recommended screw size and length.
- Inspect the existing mounting screws if you’re replacing lost or damaged hardware; measure the thread pitch and diameter with a thread gauge or by comparing to known screws.
- Measure the plate thickness and bumper clearance to determine a safe screw length (usually 3/4" to 1" for US setups; 12–16 mm for most European installations).
- Verify whether you’re using a license plate frame or a factory bracket, as some frames require longer screws or different thread types.
Using the correct screws helps ensure the plate stays secure without damaging the plate or bumper. If you’re replacing multiple fasteners or mixing parts from different markets, err on the side of a slightly longer screw only if it won’t protrude beyond the bumper or plate mounting surface.
Summary
The most common Honda license plate screw sizes you’ll encounter are 1/4"-14 UNC (3/4" to 1" lengths) for North American vehicles and M6 x 1 (12–16 mm) for many European-market models. Always verify with your specific model and mounting setup—brackets, frames, and bumper designs can alter the exact length needed. When in doubt, consult the owner’s manual or the hardware that came with your plate or frame, and measure carefully before purchasing replacements.