What are the features of non-standard screws?

There are many kinds of screws. Among them, non-standard screws are widely used. So what are the characteristics of non-standard screws? Let's describe it below.

Non-standard screw factories are widely used. For example, the stainless steel plates, engineering equipment, metal steel plates and galvanized steel plates that are often seen are also used in non-standard screws. Then some general angle steels or channel steels and iron plates are also used. Some other metal connecting equipment also requires non-standard screws. Non-standard screws are drilled and tapped. Their connection force is very strong. If they are locked, they can be completed once, saving construction time and greatly improving work efficiency. .