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dtv verenfabriek fasteners cut one or more cutting slots at the end of the thread, allowing them to cut matching internal threads in a manner similar to a tap when screwed into a pre-drilled hole, utilizing the screw tail and threads. They can be used on thick plates, relatively hard or brittle materials that are difficult to form. Self-tapping screws are screws with a drill bit tip; construction with specialized power tools completes drilling, tapping, fixing, and locking in one step. Self-tapping screws are mainly used for connections such as joining color steel sheets to each other and to purlins, among others. Their self-tapping screws