How much do you know about the
materials, classifications, and tips for purchasing self-tapping screws?
Self tapping screws are one of the most widely used screws. The following suggestions can help us make better choices when purchasing.
1. Materials
Self-tapping screws are generally made of carbon steel and stainless steel. As for the difference between the two, everyone should know something. Huaduo Screws Hardware will show you.
Generally speaking, carbon steel self-tapping screws do not add alloy elements, while stainless steel self-tapping screws have a higher alloy content. The difference is that carbon steel is more prone to rust than stainless steel, but the price is much lower than stainless steel; carbon steel is stronger than stainless steel, but its corrosion resistance is not as good as stainless steel. So both have their own advantages and disadvantages.
2. Classification
In addition to the above classification by material, self-tapping screws can also be divided into carbon steel self-tapping screws and stainless steel self-tapping screws. Self-tapping screws can also be classified by shape and function.
Generally, they can be divided into: cross pan head tapping screws, pan head tapping screws, cross countersunk tapping screws, drilling tapping screws, flat tail tapping screws, pointed tail tapping screws, triangular tooth locking tapping screws, etc.
The following introduces several types of self-tapping screws, the main material is stainless steel.
① Stainless steel drilling screws
Stainless steel drilling screws are also called self-drilling screws. They can be divided into cross pan head stainless steel drilling screws, cross countersunk stainless steel drilling screws, etc.
② Stainless steel phillips countersunk tapping screws
Stainless steel cross pan head tapping screws are made of SUS304 and SUS316, and are generally used for connecting various profiles.
③ Stainless steel cross pan head tapping screws
When using cross pan head tapping screws, there is no need to drill holes and tap the inner teeth. You can directly screw them in with tools to lock them. Stainless steel cross pan head tapping screws are different from ordinary self-tapping screws. They have larger head tips and larger tooth pitches. After drilling into the base, basically no tooth chips will fall out.
3. Selection
① Material selection
As mentioned above, carbon steel self-tapping screws and stainless steel self-tapping screws have their own advantages and need to be selected according to different situations.
If the budget is not large and there is no special requirement for the length of use, you can choose carbon steel self-tapping screws;
If you care more about corrosion resistance and rust prevention, you can choose stainless steel self-tapping screws.
② Function selection
Self-tapping screws with different functions naturally have different actual applications.
For example, the drill-tail self-tapping screws mentioned above are mostly used for the connection and fastening of color steel plates; cross pan head self-tapping screws can be used for the connection of metal and plastic; cross countersunk self-tapping screws are often used for the connection of various profiles.
Huaduo Screw Fasteners will adhere to the business purpose of “providing customers with comprehensive fastener solutions and efficient and low-cost one-stop services”. In order to continuously improve service quality and meet customers’ diverse product design needs, we have set up a 10,000 square meter factory in Xinhui District, Jiangmen City, Guangdong Province. The main business direction is the rapid design and production of screws and non-standard parts.
Huaduo Screw Fasteners will always adhere to the business philosophy of “production based on quality, development based on service” and continuously develop new products. “Initiative, service, commitment” is our guarantee to customers, and quality is the theme of our business.