Self tapping screws can be used in many fields. The difference between self tapping screws and ordinary screws is that ordinary screws must have machined screw holes before they can be screwed in. Self tapping screws are not required, and they can be tapped by themselves while being screwed in.
Self tapping screws are generally pointed, coarse toothed, and hard wood screws. Self tapping screws are mainly used for the connection and fixation of relatively thin parts, such as the connection between color steel plates and color steel plates, the connection between color steel plates and purlins, and the connection between wall beams. They also have aluminum alloy and plastic materials, and are used for non-metallic or softer metals without bottoming and tapping. At the same time, self tapping screws are pointed and can be used to “tap, drill, squeeze, and press” the consolidated body into corresponding threads on the consolidated material using their own threads, Make them closely cooperate with each other.
Self tapping screw is a screw with a drill bit, which is constructed using a special electric tool and is completed by drilling, tapping, fixing, and locking at one time. Self tapping screws are mainly used for the connection and fixation of some relatively thin parts, such as the connection between color steel plates and color steel plates, the connection between color steel plates and purlins, wall beams, etc. Their penetration capacity generally does not exceed 6mm, and the maximum does not exceed 12mm. Self tapping screws are often exposed outdoors, and they have strong corrosion resistance; Its rubber sealing ring can ensure that the screw does not leak water and has good corrosion resistance.
Self tapping screws are usually described by three parameters: screw diameter series, number of threads per inch of length, and screw length. There are two types of screw diameters: 10 and 12, with diameters of 4.87 mm and 5.43 mm for counter screws; There are 14, 16, and 24 levels of threads per inch of length, with the more threads per inch of length. The stronger its self drilling ability.