7 kinds of samples of M3 self-tapping screws, M3 self-tapping screws with washers, and M4 machine screws were ordered from our Mexico customer for their electronic products.
Material is carbon steel, and surface treatment is zinc plated.
The main function of the gasket is to increase the contact area of the bolt or nut with the surface of the part to prevent the surface of the part from being worn out.
We offer customized service. The screws fasteners will be produced based on your requirements.