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The thread on the screw of the self tapping screw is the special thread of the self tapping screw. It is mainly used to connect and fasten two thinner metal components, but small holes need to be made in advance. Due to the high hardness of this screw, it can be directly screwed into the holes of metal components to form corresponding internal threads in the components. This kind of connection belongs to detachable connection, which can also be removed in the later stage. Materials include carbon steel and stainless steel, slotted or cross grooved round head, countersunk head, semi countersunk head self tapping screw, etc. Self tapping screws can be driven in with a screwdriver, gun drill or electric hammer. Generally, electric hammer is required when driving into concrete. In daily life, the most commonly use is to punch holes with an electric screwdriver and then install the screws. It is a relatively simple installation method.
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