Seinätulppia

Seinätulppia, commonly translated as wall plugs or anchors, are fasteners used in construction and DIY projects to secure screws into walls made of materials like plaster, concrete, brick, or drywall. Without a wall plug, a screw driven directly into a hollow wall might not have sufficient grip to hold weight, or it could crumble the material.

The basic principle of a seinätulppa involves creating a larger, more stable base within the wall for the screw to engage with. Most seinätulppia are made of plastic, although metal and nylon versions also exist. They typically have a tapered or threaded body and an opening at one end for the screw. When a screw is inserted into the plug, it expands the plug, wedging it firmly against the interior surface of the wall.

Different types of seinätulppia are designed for specific wall materials and load-bearing requirements. Common types include expanding plugs, which work by physically expanding as the screw is tightened, and screw-in anchors, which are threaded and screwed directly into the wall before the object is attached. Some plugs are ribbed or have fins to prevent them from rotating within the hole. The correct selection and installation of seinätulppia are crucial for ensuring the stability and safety of attached fixtures, shelves, or other items.