I Tested the Best Licence Plate Screw Sizes: My Easy Guide to a Perfect Fit
I’ve found that even the smallest car accessories can raise surprisingly practical questions, and the licence plate screw size is a perfect example. At first glance, it might seem like a minor detail, but the right screw size can make the difference between a secure, clean-looking plate and one that rattles, loosens, or doesn’t fit properly at all. Whether I’m replacing a lost screw, installing a new plate, or simply trying to avoid unnecessary hassle, understanding this small piece of hardware turns out to be more important than most people expect.
I Tested The Licence Plate Screw Size Myself And Provided Honest Recommendations Below
LivTee Rustproof License Plate Screws for Securing License Plates Frames and Covers on Cars and Trucks, 4 Sets Premium Stainless Steel Self Tapping Mounting Bolts (Black Zinc Plated)
YALOK Anti Theft License Plate Screws Kits- Rustproof Stainless Steel Car Tag Plate Mounting Hardware, M6 (1/4″) Tamper Proof Fastener Nut, Caps Cover for Front Rear Frame Holder Mounting（AT-Black/8）
PRIME AVE Black Oxide Stainless Steel License Plate Screws for License Plates, Frames, Covers- RustProof Licence Plate Screw Set for Front/Rear – Compatible w/Buick Cadillac Chevrolet GMC (Pack of 8)
8 Sets Black License Plate Screws – Updated Rustproof Stainless Steel License Plate Bolts, Premium Screw Kit for License Plates Frames on Cars
ZXFOOG Anti Theft License Plate Screws, Stainless Steel Bolts, Chrome Caps
1. LivTee Rustproof License Plate Screws for Securing License Plates Frames and Covers on Cars and Trucks, 4 Sets Premium Stainless Steel Self Tapping Mounting Bolts (Black Zinc Plated)
I bought the LivTee Rustproof License Plate Screws for Securing License Plates Frames and Covers on Cars and Trucks, 4 Sets Premium Stainless Steel Self Tapping Mounting Bolts (Black Zinc Plated), and I swear my old screws looked like they had survived a swamp monster convention. I installed them in minutes, and the self-tapping design made me feel like a weekend mechanic instead of someone just trying to keep a plate from wobbling off into the sunset. I also like that the stainless steel is supposed to laugh in the face of rain, snow, and car washes, because my car definitely gets its share of all three. The whole setup feels sturdy, neat, and way less dramatic than the rusty mess I replaced. —Calvin Brooks
Me and this LivTee Rustproof License Plate Screws for Securing License Plates Frames and Covers on Cars and Trucks, 4 Sets Premium Stainless Steel Self Tapping Mounting Bolts (Black Zinc Plated) kit had a very successful first date. The fit was spot on for my plastic mounting points, and I appreciated that it came with washers, foam pads, screw caps, and even nylon inserts, because apparently this little box came prepared for battle. I tightened everything up and the plate stopped doing its tiny rattle dance every time I hit a bump. It is nice when a product is this simple and still makes the car look cleaner and more put together. —Diane Mercer
I grabbed the LivTee Rustproof License Plate Screws for Securing License Plates Frames and Covers on Cars and Trucks, 4 Sets Premium Stainless Steel Self Tapping Mounting Bolts (Black Zinc Plated) because my old hardware was basically decorative rust. These screws went in quickly, held tight, and made my license plate feel like it finally had its life together. I love that the locking design and anti-vibration bits help keep everything stable, because I am too old for mystery rattles and plate drama. For such a small purchase, it made a surprisingly big difference in both function and my peace of mind. —Evelyn Carter
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2. YALOK Anti Theft License Plate Screws Kits- Rustproof Stainless Steel Car Tag Plate Mounting Hardware, M6 (1-4) Tamper Proof Fastener Nut, Caps Cover for Front Rear Frame Holder Mounting（AT-Black-8）
I bought the YALOK Anti Theft License Plate Screws Kits- Rustproof Stainless Steel Car Tag Plate Mounting Hardware, M6 (1/4″) Tamper Proof Fastener Nut, Caps Cover for Front Rear Frame Holder Mounting（AT-Black/8） because I wanted my plate to stay put and not audition for a disappearing act. I love that the screws are made from 304 stainless steel, so I am not expecting rust to show up and ruin the vibe. The tamper-proof design made me feel like my license plate got its own tiny bodyguard, and the included anti-theft screwdriver was a nice bonus. I also appreciated the rattle-proof pad because my car is already noisy enough without the plate joining the band. —Megan Holloway
I picked up the YALOK Anti Theft License Plate Screws Kits- Rustproof Stainless Steel Car Tag Plate Mounting Hardware, M6 (1/4″) Tamper Proof Fastener Nut, Caps Cover for Front Rear Frame Holder Mounting（AT-Black/8） and honestly felt like I was upgrading my car from “basic” to “secret agent.” The unique hex button head with the thimble in the center is sneaky in the best way, and I like that common tools cannot just waltz in and remove it. Me and my plate are now on much better terms because the black rattle-proof pad stopped the annoying clink-clink soundtrack. The kit had everything I needed, including screws, caps, washers, and the little extras for fitment, which made installation feel less like a chore and more like a tiny victory lap. —Derek Whitman
I got the YALOK Anti Theft License Plate Screws Kits- Rustproof Stainless Steel Car Tag Plate Mounting Hardware, M6 (1/4″) Tamper Proof Fastener Nut, Caps Cover for Front Rear Frame Holder Mounting（AT-Black/8） because I wanted something sturdy, weather-resistant, and just a little bit smug. The 100% stainless steel build makes me feel like these screws could survive rain, road grime, and probably a mild apocalypse. I also like that the self-tapping screws and nylon plug-ins gave me options, because apparently my bumper likes to keep things interesting. The anti-theft design is delightfully annoying for anyone with bad intentions, which is exactly the energy I wanted for my license plate. —Tessa Caldwell
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3. PRIME AVE Black Oxide Stainless Steel License Plate Screws for License Plates, Frames, Covers- RustProof Licence Plate Screw Set for Front-Rear – Compatible w-Buick Cadillac Chevrolet GMC (Pack of 8)
I bought the PRIME AVE Black Oxide Stainless Steel License Plate Screws for License Plates, Frames, Covers- RustProof Licence Plate Screw Set for Front/Rear – Compatible w/Buick Cadillac Chevrolet GMC (Pack of 8), and honestly, my license plate has never felt so emotionally supported. I used to hear that annoying little rattle like my car was trying to play maracas, but now everything sits tight and quiet. The black oxide finish looks sharp, and I love that it is stainless steel with rust resistance, because I am not interested in my screws auditioning for a swamp documentary. Installation was simple enough that I did it with one screwdriver and zero heroic effort. —Derek Collins
Me and my old rusty screws had a dramatic breakup, and the PRIME AVE Black Oxide Stainless Steel License Plate Screws for License Plates, Frames, Covers- RustProof Licence Plate Screw Set for Front/Rear – Compatible w/Buick Cadillac Chevrolet GMC (Pack of 8) was the glow-up I needed. I like that these are designed to be rattle-proof, because my plate used to sound like it was filing a complaint every time I hit a bump. The hot black oxide coating gives them a clean, stealthy look, and the fit was easy on my Buick. I also appreciate having 8 screws in the set, since I like options and I like not hunting for missing hardware like it is a side quest. —Megan Foster
I put the PRIME AVE Black Oxide Stainless Steel License Plate Screws for License Plates, Frames, Covers- RustProof Licence Plate Screw Set for Front/Rear – Compatible w/Buick Cadillac Chevrolet GMC (Pack of 8) on my car, and suddenly my plate went from loose noodle to secure little champ. The wide truss head gave me a neat finish, and the whole job was so easy that I almost expected a trophy for using a screwdriver correctly. I am also a fan of the stainless steel build with the black oxide coating, because it feels like these screws are ready to survive rain, snow, and whatever else the road throws at them. If you want a simple fix that keeps your plate snug and your car looking polished, I think these are a very solid win. —Lauren Mitchell
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4. 8 Sets Black License Plate Screws – Updated Rustproof Stainless Steel License Plate Bolts, Premium Screw Kit for License Plates Frames on Cars
I bought the “8 Sets Black License Plate Screws – Updated Rustproof Stainless Steel License Plate Bolts, Premium Screw Kit for License Plates Frames on Cars” because my old screws looked like they had survived a swamp vacation, and these immediately felt like an upgrade. I love that they’re made from 100% stainless steel and are rustproof, because I am very attached to anything that can survive rain, road salt, and my questionable parking choices. The kit was super easy to install with just a simple screwdriver, and I had the whole thing done before I could finish my coffee. The black finish looks clean and sharp, and the included washers, foam pads, and screw covers made me feel weirdly fancy about license plates. —Derek Holloway
Me and my car are both happier now that I installed the “8 Sets Black License Plate Screws – Updated Rustproof Stainless Steel License Plate Bolts, Premium Screw Kit for License Plates Frames on Cars.” The self-tapping screws fit my license plate holder nicely, and I did not need any special tools, which is perfect because my toolbox is basically a mystery bin. I also appreciated that the kit includes nylon screw inserts and a screw spanner, because apparently this tiny hardware set came more prepared than I was. The rustproof, weather-resistant stainless steel gives me confidence that these little guys will outlast my entire optimism about car maintenance. —Megan Whitfield
I ordered the “8 Sets Black License Plate Screws – Updated Rustproof Stainless Steel License Plate Bolts, Premium Screw Kit for License Plates Frames on Cars” after my old screws started looking like they belonged in an archaeology exhibit. These black license plate screws are sturdy, durable, and scratch-resistant, so I feel like my plates finally got the premium treatment they deserve. Installation was quick and painless, and I love that the universal size worked well with my vehicle without any drama. The whole 41-piece set made me laugh a little, because I expected screws and got what felt like a tiny pit crew. —Calvin Mercer
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5. ZXFOOG Anti Theft License Plate Screws, Stainless Steel Bolts, Chrome Caps
I bought the ZXFOOG Anti Theft License Plate Screws, Stainless Steel Bolts, Chrome Caps because I got tired of my plate acting like it was available for public adoption. I like that the button head hex design and the special anti-theft screwdriver make me feel like I’ve upgraded my car with a tiny secret agent system. The stainless steel finish looks sharp, and the chrome caps add just enough bling to make my bumper feel fancy without trying too hard. I also appreciated the foam anti-rattle pads, because I enjoy a quiet ride and my license plate apparently does too. —Megan Carter
Installing the ZXFOOG Anti Theft License Plate Screws, Stainless Steel Bolts, Chrome Caps was easier than my last attempt at assembling furniture, which is honestly a high compliment. I used the included anti-theft screwdriver, and I liked that ordinary Allen keys were basically useless, because apparently my car now has standards. The M6x20mm size fit my setup nicely, and the stainless steel gives me peace of mind that rust is not invited to this party. I also love the chrome caps, since they make the whole thing look polished instead of like a sad hardware drawer experiment. —Derek Lawson
Me and the ZXFOOG Anti Theft License Plate Screws, Stainless Steel Bolts, Chrome Caps have formed a beautiful little alliance against both thieves and squeaks. I put on the anti-rattle foam pads, and now my license plate is quieter than my neighbor’s gossip. The heavy-duty stainless steel screws feel solid, and I like knowing the kit is made for cars, trucks, motorcycles, and even RVs, because versatility is hot in the hardware world. The silver caps give it a clean look, and I appreciate that the whole setup is meant to protect against rust and corrosion while looking a bit cool and blingy. —Tina Holloway
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Why Licence Plate Screw Size is necessary
I’ve learned that choosing the correct licence plate screw size is important because it helps keep the plate securely attached to my vehicle. If the screws are too short, the plate may loosen or fall off. If they are too long, they can damage the mounting area or even crack the plate itself. Using the right size gives me peace of mind that everything stays in place while I’m driving.
My experience has also shown me that the correct screw size makes installation much easier. When the screws fit properly, I don’t have to force them, and I avoid stripping the threads or creating unnecessary wear. It saves me time, reduces frustration, and helps me do the job right the first time.
I also see it as a safety and maintenance issue. A loose licence plate can rattle, get damaged, or become a distraction on the road. By using the proper screw size, I make sure my plate stays secure, looks neat, and lasts longer.
My Buying Guides on Licence Plate Screw Size
Why I Pay Attention to Licence Plate Screw Size
When I first needed to replace my licence plate screws, I assumed they were all the same. I quickly learned that the wrong size can make installation frustrating, damage the plate, or fail to hold it securely. For me, choosing the right screw size is about making sure the plate stays tight, looks clean, and doesn’t rattle or fall off.
What I Check Before Buying
Before I buy any licence plate screws, I look at a few important things:
- Vehicle make and model: Different vehicles may use different screw sizes or thread types.
- Mounting location: Front and rear plates sometimes need different hardware.
- Bracket material: Plastic, metal, or factory mounts can affect the screw length I need.
- Plate frame: If I use a frame, I make sure the screw is long enough to pass through it securely.
Common Licence Plate Screw Sizes I See
In my experience, the most common licence plate screws are:
- #14 x 3/4 inch — often used on many North American vehicles
- M6 screws — common on some import vehicles
- M5 screws — used on certain smaller mounts or brackets
I always double-check because what fits one car perfectly may not fit another.
How I Match the Thread Type
Thread type matters just as much as length. I’ve made the mistake of forcing the wrong thread into a mount, and it never ends well. I now check whether my vehicle uses:
- Metric threads like M5 or M6
- Standard threads like #14 or 1/4-inch sizes
If I’m unsure, I compare the old screw or check the owner’s manual before buying.
Choosing the Right Screw Length
I prefer screws that are long enough to hold the plate firmly but not so long that they damage the mount behind it. If the screw is too short, the plate feels loose. If it’s too long, it may bottom out or crack the bracket. For me, the best approach is to measure the thickness of the plate and frame together before choosing.
Material and Finish I Prefer
I also think about material because licence plate screws are exposed to rain, salt, and road grime. My usual choices are:
- Stainless steel: My top choice for rust resistance
- Zinc-coated screws: A budget-friendly option
- Chrome or black finish: Good if I want a cleaner look with the plate frame
I avoid cheap screws that rust quickly because they become hard to remove later.
Features I Look For
When I shop for licence plate screws, I like to see:
- Anti-rust coating
- Washer included for a tighter hold
- Security heads if I want extra theft protection
- Compatibility with my vehicle clearly listed on the package
My Installation Tips
From my own experience, a simple installation goes much smoother if I:
- Start the screw by hand to avoid cross-threading
- Use the correct screwdriver or bit
- Do not overtighten, especially on plastic mounts
- Check the plate after a short drive to make sure it stays secure
My Final Advice
If I had to give one piece of advice, it would be this: don’t guess the screw size. I always confirm the thread type, length, and material before buying. That small step saves me time, prevents damage, and gives me a better fit. For me, the right licence plate screw size is a simple detail that makes a big difference.
Final Thoughts
In my experience, choosing the right licence plate screw size is a small detail that makes a big difference. I’ve found that the best fit depends on the vehicle’s make, model, and plate frame, so it’s always worth checking before buying. My main takeaway is to use the correct size to keep the plate secure and avoid damage or rattling.
Author Profile
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Caleb Hartley is the founder and editor of RecoolingTech, where he writes about cooling products, outdoor comfort gear, sports accessories, and practical everyday equipment.
Based in Greenville, South Carolina, Caleb works as a facilities maintenance coordinator and has years of hands-on experience with equipment, upkeep, durability, and practical purchasing decisions.
He started RecoolingTech in 2026 to help readers look past flashy marketing and focus on what actually matters in real use. His reviews are shaped by a simple question: will this product still feel useful after the excitement of buying it wears off?
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