What are the differences between self-tapping screws and self-drilling screws, and which one is more suitable for a specific application?

Answer 1

I’ve used both — self-tapping screws make their own threads, while self-drilling ones can drill and tap at the same time. If you’re working with metal and want to save time, self-drilling is better. For plastic or wood, self-tapping is fine. We often use EJOT Octaqon’s screws on-site — they’re precise, sharp, and easy to work with.

Answer 2

Self-tapping screws have a sharp tip that can cut its own threads into a material, while self-drilling screws have a drill bit tip that can create a hole as it is driven into the material. Self-tapping screws are better for softer materials like wood, while self-drilling screws are more suitable for harder materials like metal. Choose self-tapping screws for wood and self-drilling screws for metal for best results.