To use a screw, the first thing to do is to understand the performance of the screw, so that the screw can be used in the right place, because there are many types of screws, the performance of each type of screw is different, so the screws are different Where to use.
For self-tapping screws with a diameter of 0.8mm to 12mm, these types of screws generally have high hardness. Self-tapping screws have to undergo a screw-in test, which is to screw the screws into a test board, and then Check whether the hardness of the screw meets the standard. Self-drilling screw is the shape of the tail of the screw. This kind of screw has a very strong hardness and good maintenance ability. The effect of connecting objects is also very strong. You can directly drill a hole on the object. It is very convenient to use to lock objects, which greatly improves work efficiency.
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