wall butterfly anchors

Metal expansion nuts, often referred to as expansion anchors or expansion inserts, are specialized fasteners that expand when a bolt or screw is threaded into them. They typically consist of a cylindrical body with slits along its length or an expandable design that facilitates outward expansion. The main purpose of these nuts is to create a secure grip within a substrate, such as concrete, wood, or metal, thereby preventing loosening due to vibrational forces, temperature fluctuations, or stress.


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Tek screws are designed with a unique combination of materials and manufacturing processes that ensure their superior performance. They are typically made from high-grade steel, which provides the necessary strength and resilience to withstand various environmental conditions and demanding applications. The screws are then subjected to a heat treatment process that enhances their hardness and resistance to corrosion, further extending their lifespan.

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