Carbon steel M1.2 M1.4 cross drive nickel plated red patch precision screw
Carbon steel M1.2 M1.4 cross drive nickel plated red patch precision screw
Industry knowledge：
How to do the surface treatment of black stainless steel screw?
When making black stainless steel screw, there are several kinds of surface treatment options: black zinc coating, electrophoresis, high temperature blackening, PVD, etc. However, among these surface treatments, we do not recommend the green black zinc surface treatment, because the adhesion between this surface treatment and stainless steel is not high, which means that the black surface of the screw is easy to fall off.
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