The anchor features a slotted body; as a screw is driven into it, the screw's tapered tip forces the anchor to expand outward, pressing it firmly against the inner walls of the drilled hole.
Upon expansion, significant normal pressure is generated between the anchor and the hole, which-combined with the friction between the wall, the anchor, and the screw-creates a secure, friction-based locking mechanism that firmly holds the object in place.
The plastic expansion anchor is a simple yet ingenious design that achieves fastening through the principle of expansion. When a screw is driven into the anchor, the walls expand outward and grip the inner surface of the hole tightly, creating a strong holding force. This design is particularly well-suited for use in brittle materials such as brickwork and concrete, as it effectively distributes stress and prevents the material from cracking.
