Ankkuriruuvit

Ankkuriruuvit, also known as anchor screws, are a type of mechanical fastener used to secure objects to various substrates, particularly concrete, brick, and stone. They are designed to provide a strong and reliable connection by creating an internal expansion or a mechanical interlock within the base material.

There are several types of ankkuriruuvit, each with a different mechanism of action. Expansion anchors rely on a tapered bolt that is driven into a pre-drilled hole, forcing an expanding sleeve to grip the surrounding material. Sleeve anchors use a metal sleeve that expands around the fastener as it is tightened. Wedge anchors are similar to expansion anchors but typically feature a threaded bolt with a wedge-shaped end that expands the sleeve. Lag shield anchors involve a lead or zinc alloy shield that expands when a lag screw is driven into it. Finally, screw anchors, also known as self-drilling anchors, are designed to cut their own threads into the substrate as they are installed, eliminating the need for a pre-drilled hole in some applications.

The selection of the appropriate ankkuriruuvit depends on factors such as the load requirements, the type and condition of the base material, and environmental considerations. They are commonly used in construction for attaching fixtures, structural elements, and equipment. Proper installation is crucial for ensuring the full load-bearing capacity and safety of the connection.