
Mazda owners and enthusiasts often face the problem of plastic screws on their cars coming undone or breaking off, especially after harsh winters. This is a common issue with Mazda's plastic undercarriage, guards, and fender liners. The plastic screws and bolts can be replaced with stainless steel bolts, which are more durable and won't seize from corrosion. The standard metric bolt size for Mazda plastic screws is M6x1.0, and they can be purchased at most hardware stores. For smaller screws, 4mm bolts are recommended. In addition, plastic push-pins or plastic push-fit pins can be used in certain areas, such as under the hood, to hold plastic components together.
| Characteristics | Values |
|---|---|
| Screw type | Phillips-head screws, hex-headed bolts, push fit plastic pins, nutserts, plastic push-pins, plastic rivet fastener clips |
| Screw size | 4 mm, 10 mm, M6x1.0 bolts, M5-1.81 x 16mm |
| Car models | Mazda 2, Mazda 3, Mazda 5, Mazda 6, Mazda 626, Mazda 929, CX-3, CX-5, CX-7, CX-9, Miata, Millenia, MPV, Mx-3, Protégé, RX-7, RX-8, 2004-2020 Mazda 3 |
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What You'll Learn

Plastic push-pins for Mazda splash guards
Mazda owners and enthusiasts have discussed the use of plastic push-pins for Mazda splash guards on online forums. Some users have mentioned that their Mazda vehicles are missing plastic push-pins for the splash guard, while others have suggested that these pins can be purchased from hardware stores or home improvement retailers like Home Depot.
One user specifically mentions that they require 10mm bolts for their Mazda's splash guard. They also state that all the threaded clips that hold the splash shield in place use the same bolt size. Another user confirms that the plastic push-pins for the splash guard are 10mm bolts, with a total of seven required: three on the front and two on each side near the wheel wells.
It is important to note that some Mazda models may have variations in the bolt sizes and configurations for the splash guards. One user mentions that their Mazda has Phillips-head screws holding the plastics towards the front of the vehicle, while another type of bolt is used further back, closer to the wheel well.
When purchasing replacement plastic push-pins or bolts for Mazda splash guards, it is recommended to verify the specific make, year, and model of your vehicle to ensure compatibility. Additionally, visual inspection and comparison of the existing hardware can aid in identifying the correct size and type of fasteners required.
Some users have also suggested using stainless steel bolts or nutserts as alternatives to plastic push-pins for Mazda splash guards. These options may provide enhanced durability and corrosion resistance compared to plastic fasteners.
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Plastic screws for Mazda splash guards
If you are looking for plastic screws for Mazda splash guards, there are a few options to consider. Firstly, it is important to identify the specific Mazda model and year to ensure compatibility with the correct screw type. For example, the Mazda 3 model spanning from 2004 to 2020 appears to be a popular choice among Mazda enthusiasts.
One option for replacement screws is to purchase plastic push-pins or plastic push-fit pins, which are commonly used for splash guards. These can be sourced from Mazda dealerships or online retailers, although some users have expressed dissatisfaction with dealership experiences. It is worth noting that the plastic push-pins may not be suitable for all locations, as some areas may require washers and bolts instead of push-pins.
Another option is to use bolts, such as the M6x1.0 bolts, which are commonly available at hardware stores. Stainless steel bolts are recommended to prevent corrosion. When replacing bolts, it is important to ensure proper torque to avoid issues with the bolts coming loose. Additionally, it is suggested to use bolts with washers to secure the splash guard firmly.
For Mazda 3 owners, there is a specific bolt size recommended for the splash guard. The bolt size is 10mm, and it is important to ensure the correct diameter and thread pitch when purchasing replacements.
Lastly, some Mazda models may require a combination of screw types. For instance, a Mazda owner noticed that their vehicle used Phillips-head screws towards the front and hex-headed bolts closer to the wheel well. It is always a good idea to consult Mazda forums, where other owners can provide specific details and recommendations for your particular model.
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Hex-headed bolts for Mazda guards
Hex-headed bolts are used in Mazda guards, and they come in a variety of sizes depending on the model and year of the Mazda vehicle. For example, the Mazda 3, Mazda 6, and Miata models from 2004 to 2020 use M6x1.0 bolts, which are commonly found at hardware stores. These bolts are used to secure the plastic fender liner screws with nutserts.
Another example is the Mazda 3, 5, 6, CX-5, and CX-9 models, which use Phillips hex head screws with a size of M5-1.81 x 16mm. These screws are available on Amazon and are suitable for various locations on the vehicle, including the engine chassis guards, splash guards, and brackets.
It is important to note that the type of connector varies depending on the location of the plastic covering. For instance, a Mazda owner observed that their 2006 Mazda 3 hatchback had Phillips-head screws towards the front of the vehicle, while a hex-headed bolt was used to hold the plastics closer to the wheel well on both sides.
When replacing hex-headed bolts for Mazda guards, it is recommended to use stainless bolts to prevent corrosion and ensure longevity. Additionally, it is suggested to remove one of each type of screw for comparison when purchasing replacements from a hardware store.
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Phillips-head screws for Mazda guards
Phillips-head screws are used in Mazda vehicles to hold together plastics toward the front of the vehicle. These screws can be purchased online or at a hardware store.
Mazda 3 Forums
According to a Mazda 3 forum, the Phillips-head screws that hold together the plastics under the front of the vehicle are of a standard size and can be found at a local hardware store. The forum also mentions that the screws on the front splash shield are smaller, around 4 mm.
Amazon
Amazon offers a range of Phillips-head screws for Mazda vehicles:
- DZMZL offers a set of 10 Phillips Hex Head Screws that are suitable for Mazda 3, 5, 6, CX-5, CX-9, and MX-5 Miata models. These screws are commonly used in inner bumpers, radiator support, interior trim pieces, engine chassis guards, and more.
- Rexka offers a set of 30 Phillips Hex Head Screws that are compatible with various Mazda models, including Mazda 2, 3, 5, 6, CX-5, CX-7, and CX-9. The screw size is M5-1.81 x 16mm, and they are used for the fender liner splash shield bumper cover.
Fastener Zone
Fastener Zone offers a range of Phillips-head screws and clips for Mazda vehicles, including tail lamp screws, door trim panel retainers, grille and headlamp door clips, and more. While specific models are not mentioned, these screws and clips are likely compatible with various Mazda vehicles.
It is important to verify the compatibility of the screws with your specific Mazda model before purchase to ensure they fit properly and serve their intended purpose.
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Nutserts as an alternative to Mazda plastic screws
Nutserts are an alternative to plastic screws for Mazda guards. They are used to replace plastic fender liner screws. Nutserts are a good option if you want to make a panel removable without dismantling the dash. They can be tightened with an Allen wrench, and you can also use a washer and a bolt with them.
To install nutserts, you will need wheel-removing tools for easy access, such as a jack and a breaker bar torque wrench. You may also need a drill and a drill bit to adapt the holes, depending on the size of your nutserts. You can buy general nutserts or a kit that includes washers and bolts.
When using the provided tool, put pressure on the nutsert with a wrench and spin the bolt with a ratchet to pull the nutsert together and clamp it down. Then, thread in the bolt and tighten it with an Allen wrench.
Nutserts are made of stainless steel and are available in various sizes. They are a good alternative to plastic screws, which can be a huge pain to remove and often shatter.
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Frequently asked questions
The size of the plastic screws depends on the Mazda model and the location of the screws. For example, the 2004-2020 Mazda 3 uses 4 mm screws for the front splash shield. The Mazda 3 also uses M6x1.0 bolts, which are a common size and can be found at most hardware stores.
The plastic screws on your Mazda guards are likely to be part of the fender liner or splash shield. These components help to protect the car's body and engine from water, dirt, and debris.
You can buy plastic screws for your Mazda guards at most hardware stores or automotive retailers. Some common options include Home Depot and Amazon.
To replace the plastic screws on your Mazda guards, you may need a variety of tools, including a jack, breaker bar, torque wrench, drill, ratchet, and wrench. The specific tools and steps may vary depending on the location of the screws and your Mazda model.
Some common issues with the plastic screws on Mazda guards include stripped threads, missing screws, and incorrect replacement sizes. It is important to use the correct screw size and type to avoid damage or improper function of the guards.










































