Many household items are designed to be fixed on the wall in order to save more space. Most household items that are not too heavy can actually be fixed by using expansion screws. What are expansion screws? In fact, it is a kind of nail, but it has a much stronger load-bearing capacity than ordinary nails. Its structure is also very simple, consisting of two parts: screws and expansion tubes. The working principle is to drive them into the wall together. When the nuts are locked inwards, the screws will pull outwards, thereby expanding the expansion tube and sticking it into the wall, playing a solid fixing role.
Generally speaking, for expansion screws, those made of metal are called expansion bolts; those made of plastic expansion tubes are called expansion screws. For plastic expansion tubes, you need to drive the expansion tube into the hole first, and then screw the screw into the expansion tube. The bearing capacity of metal expansion bolts is much stronger than that of plastic ones, and they are often used in construction, such as fixing security doors and windows. Plastic expansion screws are mostly used for the installation of shelves, small brackets, etc. at home. The specific choice actually depends on the weight of the household items. Try to use metal for large items, and plastic for other small items.
So how to use expansion screws? We need to determine the location and diameter of the hole. This makes it easier to determine what size expansion screws to use. The same diameter has different lengths. We need to choose expansion screws of appropriate specifications based on the stability of the item. Once you know the diameter of the expansion screw, you can choose the corresponding specification for the drill bit. Generally speaking, the marked diameter of the expansion screw is slightly larger than the actual diameter of the screw, giving us room for installation. Then determine the depth of the hole, which is basically equal to the depth of the expansion tube. Finally, drive the expansion tube into the hole and tighten the screws. MAX POWER TOOLS, your good helper for life!
