sheet metal screws with washers

Butterfly screws, also known as toggle bolts, are a type of fastener that features a pair of wings that fold during installation and expand once they are inside a pre-drilled hole. The design allows for a stronger grip on hollow walls, such as drywall, where regular screws might not provide sufficient anchoring. Butterfly screws are particularly useful for mounting heavier items like televisions, where the risk of falling can be a significant concern.


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Wedge anchor bolts are a type of fastener used to attach fixtures to solid concrete. They consist of a bolt, a nut, and a wedge mechanism that expands as the bolt is tightened. This expansion locks the bolt into the concrete, providing stability and ensuring that the fixture remains firmly in place. The application of these anchor bolts is prevalent in various projects, including buildings, bridges, and other infrastructures where strong and reliable anchorage is a must.


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