Galvanized steel screw: Characteristics, applications, 2024 price

Small and seemingly simple items like screws are often underestimated, yet they are an essential component of construction projects. For metal roofing, screws typically account for less than 1% of the total installation cost, but they can cause up to 100% of roof damage. To provide more useful information, let’s delve into the details of hot-dip galvanized steel screws through the article below.

What are hot-dip galvanized steel screws?

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Hot-dip galvanized steel screws are made using the hot-dip method to help prevent corrosion from chemicals, natural factors, electrolysis, etc. Thanks to their outstanding features, these screws are used in environments with high chemical corrosion and are directly applied in marine environments.

Structure of hot-dip galvanized steel screws

According to research, hot-dip galvanized steel screws have a structure consisting of 4 parts, as follows:

  • The head of the screw is typically hexagonal with 6 evenly spaced sides, similar to a hex bolt.
  • The body has a cylindrical shape with threads that can penetrate deep into the metal. However, for hot-dip galvanized steel screws with dimensions from M5.5×50, the structure of the stainless steel screw body may be slightly different.
  • The self-drilling head of the screw has a drill-like tail. The purpose is to easily penetrate the metal surface upon contact.
  • The indispensable part of hot-dip galvanized steel screws is the rubber washer, also known as a rubber gasket. They function to seal the surface to limit water ingress at the drilled location and prevent corrosion on the drilled surface.

Advantages of hot-dip galvanized steel screws

Hot-dip galvanized steel screws have several notable advantages that you should know:

  • They are made from hot-dip galvanized steel, making them resistant to corrosion from natural, chemical, and electrolytic environments. This outstanding advantage is achieved through the zinc oxidation process, which is only about 10% compared to the oxidation process of iron and steel.
  • The construction process is convenient and easy thanks to the harder self-drilling head. Moreover, the large core relief groove makes it easier to drill into metal faster than other conventional hot-dip galvanized steel screws.

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Applications of hot-dip galvanized steel screws

Hot-dip galvanized steel screws are used in various applications such as:

  • Used in steel roof structures.
  • Used in prefabricated steel houses.
  • Used in installing skylights.
  • Applied in lightweight steel trusses.
  • Important projects in life such as airports, thermal power plants, etc.
    Compatible in harsh environments with high salt and acid concentrations in the air.

Raw materials for producing hot-dip galvanized steel screws

According to gathered information, hot-dip galvanized steel screws are made from high-strength steel. They are then hot-dip galvanized and dipped at high temperatures, while the manufacturing process is extremely rigorous. Therefore, their durability is very high, with highly effective corrosion resistance.

Guide to installing hot-dip galvanized steel screws

The installation process of hot-dip galvanized steel screws will be carried out according to the following steps:

  • Step 1: You will need to use a drill with a drill bit that matches the screw head. Then, you will lightly press the drill into the screw.
  • Step 2: You will turn on the switch on the drill at an appropriate speed. The purpose is to allow the screw drill tip to penetrate through the surface of the metal sheet.

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Some notes that you should keep in mind:

  • You need to determine the exact points for easy screwing. Specifically, they are the contact points of the roofing sheet and the purlins, where the square screw will be placed perpendicular to the surface of the roofing sheet, and the screw head will contact the surface of the roofing sheet.
  • Limit leakage or rust at the drilling point, so you should use additional rubber washers.

Price of hot-dip galvanized steel screws

Currently, there are many places on the market selling hot-dip galvanized steel screws, so the price of hot-dip galvanized steel screws may vary. To easily own a product with good quality and reasonable price, you can immediately contact Stavian Industrial Metal Joint Stock Company.

Thus, the content of the article above has shared in detail about hot-dip galvanized steel screws. Hopefully, you have gained more useful information to apply the product more effectively in practice.

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Stavian has extensive experience in industrial metal material trading, with a team of professional consultants, so you can rest assured when choosing us. For any information you may need, you can search for Stavian through the following channels:

Stavian Industrial Metal Joint Stock Company


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