Dowel is the most common fastener used in modern construction. It is made in the form of a plastic, metal or nylon rod with a tip and a head in the form of a hook, ring, cylinder, spherical or flat cap with a slot. The body of this fastener may have a thread or expander mechanism. Dowels are used for hollow materials, as well as for solid ones, for example, brick, concrete, stone, aerated concrete and others.
The expansion dowel is the most reliable and commonly used fixing device. Depending on the material and design, this element is designed to fasten screws and screws to the base with their further screwing. At the moment, this type of product is made from different materials: it can be plastic, metal or other material that has the required qualities and characteristics. The design can also be very different. The expansion dowel is selected depending onfor what purposes you wish to use it. For example, a metal dowel is used very widely when it is necessary to compensate for significant loads exerted on the surface, so it is suitable for hollow thin-walled structures.
Another useful and versatile fastener can be considered a dowel for aerated concrete. It is used in conjunction with wooden elements and chipboard screws. This fastener allows you to securely fix a variety of gratings, plumbing and electrical equipment, pipelines and consoles to the surface of aerated concrete. Such an expansion dowel is made of metal and polyamide of the highest quality. This tool has external ribs, made in the form of a spiral, which allows you to double the diameter of the product while screwing in the dowel. This is necessary to distribute pressure over the working area of aerated concrete as evenly as possible with a transverse or center thrust. It is customary to make this fastening material from stainless steel of the highest strength, which made it possible to find the widest application for them in the installation of windows, doors, suspended structures, and much more to aerated concrete surfaces. The expansion dowel can have different sizes and shapes, while it is used in combination with self-tapping screws or screws, depending on the tasks.
Expansion dowel has a metal, plastic or nylon core. In such fasteners, the body has a spacer mechanism, whichduring the screwing process, the screw expands, which ensures the most durable fixation. This fastener can be used for mounting metal, wooden structures to a variety of surfaces, for example, brick or masonry. If we talk about outdoor work, then it is appropriate to use nylon fasteners, and polypropylene are intended for indoor work. Particularly loaded structures can be fastened with metal fasteners.
