What is the difference between special screws and custom screw and standard screws

The so called non standard special screws can also be called special custom screws, that is to say, the screws without national standards are called special-shaped screws, which are generally used in special occasions and special purposes

Compared with standard screw fasteners, non-standard shaped screws/custom screws/special screws show superior characteristics in many aspects. In the face of huge market demand, we must keep up with the development of the times and the pace of social development. Special-shaped screws/custom screws/special screws are very good weapons. Because special-shaped screws /custom screws/special screws are only suitable for a certain company or a certain product, it has uniqueness and specificity. When it is produced, the production process is also different from that of standard screws. For example, the method of preventing moisture and moisture for special-shaped screws/custom screws/special screws: use solvent-free paint as far as possible for special-shaped screws used on vibration machinery; use paint without volatile acid; choose paint with good hydrolysis resistance. The difference from ordinary screws is whether there are national standards.

The quality inspection of non-standard specia screws is generally considered from the appearance and the quality effect of electroplating, which is measured by the quality and corrosion resistance of non-standard screws, and finally the appearance of non-standard screwsThe quality inspection of non-standard special-shaped screws is generally considered from the appearance and the quality effect of electroplating, which is measured by the quality and corrosion resistance of non-standard screws, and finally the appearance of non-standard screws. The corrosion resistance is that we first set the test conditions, and then conduct the corrosion test on it.. The corrosion resistance is that we first set the test conditions, and then conduct the corrosion test on it.

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