1. Ordinary self-tapping screws 2. Cut self-tapping screws 3. Self-extruding tapping screws 4. Drilling and tapping screws 5. Metal drive screws 6. Wall plate self-tapping screws 7. Fiberboard nails 8. Combined self-tapping screws 9. Other types of sel...

1. Head shape Self-tapping screws have a variety of head shapes. 2. Screwing method The basic way there are two kinds of external and internal screwing. 3.Types of threads There are many types of threads for self-tapping screws, including self-tapping th...