Screws that form their own threads cause for a lot of confusion. Here we delve into self-drilling screws, self-tapping screws, thread-cutting screws, and thread-forming screws. Self-Drilling Screws Self-Drilling Screws drill their own hole and make their own threads. They actually look like a drill bit on their end. Many people refer to them as a … Continue reading Screws that Form their Own Threads