Very Long Screws, Head Type, Groove Type, Material And Finish

Today, Shi Shi Tong screw manufacturers mainly talk about the very long screws head type, groove type, surface treatment and materials. Because some customers will worry, the longer the length of the screw, the head, groove, surface treatment, material will not have an impact. The Shi Shi Ton screw manufacturer can tell you that the head type and groove type are not affected, but the surface treatment and material will be affected.

First of all, let’s take a look at what are the head and groove types?

Of course, there are many more drive type, which are shown here.

Very long screws are mainly made of stainless steel and carbon steel. Some are made of aluminum, but long screws made of aluminum are usually not very long. This is due to the limitations of the material itself.

The surface treatment of very long screws mainly refers to long screws made with carbon steel, because the surface treatment of stainless steel is usually to remove the oil on the surface, or to conduct passivation. The surface treatment of carbon steel includes nickel plating, white zinc plating, black zinc plating and blue zinc plating. When the screw is very long, basically electroplating factory is not able to do.

If you want to know more about very long screws, please contact us at sst@szsst88.com