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Construction industries, HVAC companies, roofing contractors, gutter experts and even DIY enthusiasts need access to the right solutions — whether it be the right power tools or the best set of fasteners. But how do you know if sheet metal screws are your best bet compared to other types?
All Points Fasteners gives you a sheet metal screw definition, along with its different types and how to use them. We provide enough guidance to eliminate the guesswork when you’re deciding between sheet metal screws and what type matches your applications.
As suggested by its name, a sheet metal screw is often used for sheet metal applications. You can fasten metal pieces to other metal objects, or you can attach metal to another surface like plastic, aluminum, plywood, hard rubber or wood.
These fasteners are fully threaded to increase retention between materials. They have sharp tips and threads to help pierce solid metal surfaces and other sturdy resources.
Sheet metal screws can be made of stainless steel, which aids in durability and long-term performance levels. However, not all sheet metal screws are stainless steel, and there are other material options to choose from. 410 stainless screws (magnetic) that do not have a protective coating are called passivated. Those that do have a protective coating feature, have extra prevention from surface rust from forming over time.
Sheet metal screws are categorized by headstyles and three numbers that represent the screw’s diameter, length and thread count. The diameter, or sheet metal screw size, is indicated with a number between zero and 24 to describe the shank, although the most common sizes used by contractors and OEM’s would be 6 to 14. The length is measured differently depending on the head style of the screw; usually, from underneath the head of the screw to the point. In the case of flat or bugle heads, you would measure the entire length of the screw since it will be embedded in the material in it’s entirety. Each fastener also has a pitch that indicates the number of threads per inch of a fasteners length.
For example, a screw that reads 8-14×1 indicates it’s a size 8 with 14 threads per inch and is 1 inch long. Sheet metal screw size requirements will vary depending on your project and material.
Sheet metal screws typically work best when connecting thinner metal objects or when fastening metal to wood, plastic and other materials.
Like any hardware, fasteners are available in different materials, lengths and gauges. They also have different point, head and slot variations. The two main types of sheet metal screws are self-tapping and self-drilling, each having many features to choose from.
Self-tapping screws are ideal for jobs that have pre-drilled holes. The screws often have sharp tips to drive the screw through the metal. The technique of using a pilot hole helps prevent the splitting of the material, creating a more seamless finish.
The benefits of using these sheet metal fasteners include:
Self-drilling sheet metal screws have a tip that’s more like a drill point to penetrate metal without the need for a pilot hole. It helps preserve the integrity of the material by avoiding denting. You can fit the screw to your drill bit and drive it into a surface.
Some advantages of choosing these screws include:
Which type and features you need will depend on the task at hand. The point, head and slot type of sheet metal screws work for a variety of jobs in every industry.
Sheet metal screws are available in three point types.
Each sheet metal screw also has varying head types — flat, hex, hex washer, oval, pan and truss.
Based on the requirements of your job, do you need the screw to be flush against another surface? Or, will your project do well with a screw that sits above?
Depending on the tools you have available, you may be able to work with all three slots — cross, slotted and square.
Figure out which point, head and slot type best suit your projects, whether you work in the construction, gutter or roofing industries.
Uses of sheet metal screws can differ if you’re working with sheet metal one day and attaching metal to a plywood surface the next. Always start with the right protective gear for any hardware project. For example, eyewear will shield your eyes from metal shavings and other potential hazards.
Be careful not to over-tighten the screws because you can strip the heads or damage the material.
Once you have all the supplies you need, make sure to drill slowly with precision and caution. Operating too fast can split the sheet metal or cause other damage to the material. If you need further help understanding which is best for your jobs, rely on the professionals for advice.
While sheet metal screws and wood screws look similar, there are some important differences between the two types. Wood screws have a coarser thread (less threads per inch) than the sharper, tighter threads of the sheet metal versions. Also, sheet metal screws are fully threaded up to their heads vs two-thirds threaded with a smooth shank underneath the head like the wood screws. This shank allows the two pieces to be pulled together.
Thus, wood screw products are a better option when fastening materials such as plywood and lumber. And, while you can substitute sheet metal screws for lumber projects if you’re in a pinch, wood items do not work and should not be used in metal structures or workpieces.
All Points Fasteners is a fastener distributor that goes the extra mile to chase down what you need. We provide sheet metal screw solutions and even find uncommon fasteners when your projects rely on unique results. Our specialists will suggest what premium parts will work best for your applications to keep your operations running. We are American owned and operated, striving to build long-term relationships with your company.
You can also count on us for reliable support whenever you need it. We are the only online fastener company with a live chat feature, enabling you to get immediate help finding the parts you need.
Browse our inventory of sheet metal screws or reach out to our service team online for support. You can also call us at 800-483-6354. All Points offers a live chat to help you find the right part for the job, too.
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