The self-tapping screw does not need a nut with a female thread, and while screwing it in, it drills a female thread in the material.
Self-tapping screws, also called quick-mouth screws or quick-thread screws, can be drilled directly without drilling holes.
The thread is divided into male thread and female thread. The thread on the ordinary screw is a male thread, and the thread on the nut is a female thread.
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