Cross head screw material is divided into iron, that is, carbon steel, also divided into stainless steel.
There are three types of carbon steel: low carbon steel, medium carbon steel, and high carbon steel.
Stainless steel: stainless steel SUS201 and stainless steel SUS304, stainless steel SUS316, stainless steel SUS404 and so on.
The electroplating colors of cross disk head screws are as follows:
1. Common electroplating: white nickel, black zinc, blue zinc, etc.;
2. Green white zinc, green colored zinc, green white nickel, green blue zinc, etc.

This product adopts medium carbon steel cold upsetting molding, the surface treatment is environmental protection black zinc