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Expanding metal wall anchors, often referred to as expansion anchors or toggle bolts, are hardware devices used to secure objects to walls or ceilings. They are constructed from metal and feature a unique design that allows them to expand within the wall when screw tension is applied. This expansion locks the anchor in place, providing a strong hold that can support significant weight.

What is an M20 Foundation Bolt?

Design Features

2. Pre-drill the Hole For toggle bolts and expansion screws, it’s important to pre-drill the hole according to the manufacturer’s specifications to facilitate proper expansion.