Customer customized cross groove non-standard large flat head screw, stainless steel 304HC material, cold heading machine forming.
The surface treatment is passivation. Passivation refers to the process in which the metal is oxidized by strong oxidant or electrochemical method to make the surface become inactive, that is, passivation. It is a method to change the metal surface into a state that is not easy to be oxidized and slow down the corrosion rate of the metal.
Dongguan Tiansheng Co., LTD has been specialized in developing and producing non-standard fasteners for 12 years.
You are welcome to customize different head type/length/surface treatment and similar products by drawing/sample.
