How do screw manufacturers solve the problem of countersunk head tapping screws falling off when they are plated with black zinc?

During the production and shipment of screws, various factors have been encountered, resulting in poor product quality and customer returns. The step of returning the goods is very serious. For example, when black zinc is plated, black zinc falls off and becomes white. How does the screw manufacturer solve the problem of countersunk head tapping screws falling off when they are plated with black zinc?

The reason why the countersunk head tapping screws are black zinc plating is easy to cause the black zinc to fall off. On the one hand, there are scratches caused by production. This may be due to a problem in the production mold (the machine has not been adjusted well). At this time, the master’s screw production technology will be tested. Shi Shi Tong has 22 years of experience in producing screws, and our customers do not have to worry about this problem.

On the other hand, the reason may be that the black zinc plated countersunk head tapping screws have fallen off due to transportation. If the protective measures are not taken during transportation, it may cause shedding. Like the countersunk head self-tapping screws, the self-tapping teeth collide with each other easily causing the black zinc to fall off. In order to avoid such problems, the screws produced by Shi Shi Tong will put sponges between the screws to avoid collision. Our screws go out rarely have such problems, and customers are also satisfied with our product packaging.

If you need countersunk head tapping screws, please contact us, we have many other types of screws, welcome your inquiry!

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