1. Material
When choosing self tapping screws, we first determine which material is needed. At present, the commonly used materials for self tapping screws include iron, copper, aluminum, alloys, as well as high-end titanium alloys, pure titanium, etc. The price difference of self tapping screws with different materials is huge. When choosing, the first step is to choose a material that is relatively suitable and suitable for the required characteristics and functions. If copper self tapping screws are needed, there is no need to choose titanium alloy self tapping screws.
2. Brand
The good or bad brand reputation is often determined by the quality of self tapping screw products. The quality of self tapping screws depends on three aspects: screw diameter, number of threads, and screw length. Relatively speaking, screws with more threads have stronger self drilling ability. Generally speaking, self tapping screws created by good brands have higher quality and overall performance, which can meet a longer service life.