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DIN and standard parts

Weld nuts

Weld nuts enable permanent and reliable connections.

Square neck weld nuts (DIN 928).

Weld nuts – the solution for difficult-to-access applications

The nuts are welded to the sheet metal at the contact points of the weld nut – this process is also known as projection welding. This ensures that the nut cannot become detached from the mounting plate. This is also an advantage when the welding point is difficult to access. The screw can then be screwed in through a pre-punched hole.

Method and principle

Overview of weld nuts

Working principle

Welding the weld nuts to the mounting plate ensures that a permanent connection is created. The strength properties of the nuts are changed by the heat input. This should be taken into account when designing constructions.
HELICOIL® self-locking nuts are an alternative that guarantee a strong thread despite the welding process.


Available materials are steel and stainless steel A2 and A4.


Our products can be coated with different surface finishes, depending on requirements and application. We will be pleased to give you individual advice on the right coating system.

We offer the following surfaces as standard:

  • Plain
  • Zinc plated (industry standard)
  • Thick-layer passivated
  • Zinc-nickel
  • Zinc flake

Find the right solution for your application

Types of weld nuts

  • Hexagon weld nuts

    Hexagon weld nuts are similar in shape to traditional hexagon nuts. Each corner has a contact point that is permanently welded to the mounting plate.


    • DIN 929
  • Square neck weld nuts

    Square weld nuts have four contact points on the underside that can be projection welded to the mounting plate. The resulting cohesive bond can only be broken by destroying it.


    • DIN 928

Information and more


Interested in weld nuts? Please download further information here.