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A4 Wickes Trim Lows Customized High Quality M3 Stainless Steel Knurled Screw Product：

Self-tapping screws are suitable for the use of wooden materials, which is what we often call wood screws. Generally it is manual operation. Due to the limitation of manpower, this kind of screw is generally very small and its use range is relatively narrow.

Self-tapping screws are a combination of taps and bolts. The front is the faucet, and the back is the line. Generally, soft materials can be screwed in directly after drilling. The thread is tapped by a tap, and then the thread of the bolt is forced. If the screw diameter is small, the material is also very soft. You don't even need to punch holes first, for example screw them into wood.

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