The dowel is the most common fastening element used in modern construction. It is made in the form of a plastic, metal or nylon rod, having a point and a head in the form of a hook, ring, cylinder, spherical or flat hat with a spline. The body of this fastening element may have a thread or a clamping mechanism. Used dowels for hollow materials, as well as for solid, for example, brick, concrete, stone, aerated concrete and other.
Spacer is the most reliable and often used fastener. Depending on the material and construction, this element is intended for fixing screws and screws to the base with their further screwing. At the moment this kind of products is made of different materials: it can be plastic, metal or other material with the required qualities and characteristics. The design too can be very different. The spacer plug is selected depending on the purpose for which you wish to use it. For example, a metal dowel is used very widely if necessary to compensate for significant loads exerted on the surface, so it is suitable for hollow thin-walled structures.
Another useful and universal fastener can be considered a dowel for aerated concrete. It is used in conjunction with wooden elements and chipboard screws. This fastening element makes it possible to secure a reliable fixation of various grids, plumbing and electrical equipment, pipelines and consoles to the surface of aerated concrete. Such a dowel made of metal and polyamide of the highest quality is made. This tool has external ribs made in the form of a spiral, which makes it possible to increase the diameter of the product by half during screwing in the dowel. This is necessary for the distribution of pressure over the working zone of aerated concrete as uniformly as possible with transverse or center thrust. This fastening material is made of 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 the aerated concrete surfaces. The dowel spacer can have various sizes and the form, thus it use in aggregate and саморезами or screws, depending on the tasks in view.
Spacer has a metal, plastic or nylon rod. With such fasteners, the body has a spacer mechanism that expands during the screwing process, thereby ensuring the best possible fixation. This fastening element can be used to mount 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 for domestic work are designed polypropylene. Particularly loaded structures can be fastened by means of metal fasteners.