The number of clips, screws, bolts, and springs holding a modern car together is staggering. Each one serves a unique purpose that could not be replicated by something different. Keeping that in mind, you may be wondering about the differences between plastic and metal automotive fasteners and when to use each one. Here’s what you need to know.
Types of Metal Automotive Fasteners
There are many different types of auto fasteners available in metal, ranging from tiny screws for electronics to heavy-duty studs, with varying options in between. You can install some fasteners with basic tools, while others require specialized equipment for installation. A few of the most common types of automotive fasteners you want to stock include:
- Bolts and nuts
- Clamps
- Pins
- Retainer clips
- Rivets
- Screws
- Springs
- Studs
Qualities and Advantages of Metal
When you need a strong fastener that can withstand extreme conditions, you will likely turn to metal. Stainless steel and aluminum are common metals used to make auto fasteners. They resist corrosion, which makes them particularly attractive considering the corrosive environment in engines and undercarriage.
Metal can withstand a wider range of temperatures, both heat and cold, than plastic. It will not melt when exposed to high-temperature engine components, and it won’t crack or weaken in cold winter temperatures. It also retains its strength in direct sunlight.
Best Uses for Metal Fasteners
Given the qualities of metal automotive fasteners, it may not be surprising that they are well-suited for applications where strength and durability are primary concerns. They are also great for fastening components that may need to be removed repeatedly. Some examples include wheel lugs and suspension parts.
Because it can withstand high temperatures, metal is also the preferred fastener material for any components that get hot. In cars and trucks, this includes many engine components and anything that is on or near the exhaust system.
Types of Plastic Automotive Fasteners
Plastic has many uses in automotive applications. It is often found holding trim, body panels, and wires in place. Some common types of plastic fasteners include:
- Body panel clips
- Clamps
- Door clips
- Rivets
- Trim clips
- X-mas tree fasteners
Qualities and Advantages of Plastic
Plastic has several advantages over metal when it comes to automotive fasteners. First, it is very lightweight, which means that your clips won’t unnecessarily weigh down trim pieces. Plastic fasteners are also an affordable option, which makes them attractive when the strength of metal is not necessary.
Another key advantage is that plastic is not conducive, which makes it a good choice if you want to reduce the possibility of arcing. Additionally, these fasteners will never rust and can withstand most automotive conditions.
Best Uses for Plastic Fasteners
Common plastic fasteners are typically used as clamps on flexible lines, to route wires throughout vehicles, and to adhere trim and body panels. Many carpet clips are also plastic.
Choose the Right Fasteners for the Job
Plastic is ideal for lightweight applications that will not be exposed to extreme temperatures. Metal fasteners are usually a better choice when you need strength that will not degrade. No matter what type of automotive fasteners you need, be sure to purchase high-quality, professional-grade supplies.
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