Thunderbolt fixings are a type of heavy-duty anchor used to secure objects to concrete, brick, or other masonry materials. They are designed to provide a secure and permanent anchor point for heavy loads, such as machinery, equipment, and fixtures. The thunderbolt fixing is made up of a threaded rod with a mushroom-shaped head, which is inserted into a pre-drilled hole in the material. A special hammer is used to drive the rod into the material, causing the head to expand and grip onto the sides of the hole. This provides a secure anchor point that can support heavy loads. Some of the advantages of using thunderbolt fixings include: Can be used in a variety of solid materials Provide a strong and permanent anchor point Suitable for heavy loads Allow for easy installation with a hammer Do not require specialized tools or equipment When using thunderbolt fixings, it is important to choose the correct size and type of fixing for the load requirements and the material being anchored to. It is also important to follow the manufacturer's instructions for proper installation, and to ensure that the fixing is fully seated in the hole before tightening. Professional installation may be required for particularly heavy loads or applications where safety is a concern.