Difference Between Class 3 and Class 4 Galvanised Screws – DMS Fasteners
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Difference Between Class 3 and Class 4 Galvanised Screws

Difference Between Class 3 and Class 4 Galvanised Screws

DMS Fasteners |

Choosing the right galvanised screws can be a game-changer for your projects. Class 3 and Class 4 screws offer different levels of protection against rust and corrosion. Let's break it down simply.

What's Galvanisation?

Galvanisation adds a protective coating to steel or iron screws, preventing rust. It's like a shield against moisture and air.

Class 3 Galvanised Screws

  • Protection Level: Moderate
  • Where to Use: Great for indoor areas or outside spots with less moisture.
  • Thickness: Thinner layer. Think of it as a lightweight shield.

Class 4 Galvanised Screws

  • Protection Level: High
  • Where to Use: Perfect for outdoor settings, especially in harsh weather or coastal areas.
  • Thickness: Thicker coat. It's your heavy-duty armour against corrosion.

Making the Choice

  • Consider the Environment: Class 4 is your bet for outdoors; Class 3 works well indoors.
  • Think Long-Term: For longevity, especially outdoors, Class 4 is worth it.

Choosing between Class 3 and Class 4 galvanised screws depends on where you're using them and how much protection you need. Pick Class 3 for lighter duties and Class 4 for battling harsh conditions.

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