Expanding metal wall anchors are designed to hold heavy items by distributing the load across a larger area within the wall. They typically consist of a metal sleeve that expands when a screw is driven into it. This expansion action grips the surrounding material, creating a solid anchor point that can support significant weight. They are particularly useful in scenarios where traditional screws might loosen over time, such as in drywall installation or when hanging items from concrete surfaces.

In addition, these screws play a pivotal role in the manufacture of trailers, metal buildings, and even in the assembly of recreational vehicles (RVs), where exposure to elements is a constant concern. Their reliability extends to DIY projects as well, making them a favored choice among home improvement enthusiasts.

2. Cost-Effectiveness The reduction in labor requirements leads to lower installation costs. Furthermore, the ability to use self-drilling bolts in various materials diminishes the need for multiple types of fasteners, streamlining inventory and reducing overall expenses.