1. Different properties
Self tapping screws are screws with brick heads that can be constructed using specialized electric equipment, allowing drilling, fixing, and locking to be completed simultaneously, which is very simple.
And ordinary screws are only common, as long as they are not irregular screws, they can be considered ordinary screws.
2. Different characteristics
Self tapping screws can use their own threads to squeeze the same thread on the installed item, thereby better fitting together. This connection is relatively tight and not prone to loosening.
Ordinary screws, on the other hand, are designed with a flat head and have the same thickness. When using them, it is necessary to have screw holes and tapping teeth to achieve better results.
3. Using different
Self tapping screws are generally used in non-metallic or soft metal materials, without the need for bottom drilling or tapping.
Ordinary screws, on the other hand, require drilling and tapping. Often used on relatively hard non-metals or metals.