bolt wedge anchor

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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  • In addition to the primary nutrient categories, there are specialty fertilizers designed for specific purposes. For example, slow-release fertilizers provide nutrients over an extended period, reducing the frequency of application. Liquid fertilizers are another option, allowing for easy application and quick absorption by plants.


  • 2. Food Industry As a food additive, it serves as a preservative and flavoring agent, raising its demand in the beverage and food processing sectors.