1, What is the difference between ?
Secondly, there are differences in usage, and self tapping screws are usually used on materials with lower hardness such as non-metallic or iron plates. Because self tapping screws can drill, squeeze, and tap corresponding threads on the fixed material through their own threads, making them tightly fit each other. Drilled tail screws are mainly used on lightweight steel structures, which can penetrate thin steel plates and have a wider range of applications in various building and industrial structures.
self-tapping screw
2, Detailed introduction of drilling tail screws and self tapping screws
1.
