In solar mounting systems, whether it's an L foot, tile hook, trapezoidal roof hook, or rail joiner in ground mount, self-tapping screws are commonly used. Some prefer carbon steel screws, others opt for SUS304 or 410 screws, while some choose bi-metal hybrid screws. Self-tapping screws create their own thread pathways by cutting precise grooves as they are driven into materials like wood or metal.
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