Hexagon bolts are relatively common among our screws, and customers also use them more. The following mainly talks about the common bad causes of external hexagon bolts.

Common causes of external hexagon bolts

1. The material of the outer hexagon bolts is poor. Some customers of the outer hexagon bolts need stainless steel or carbon steel. However, due to the goods sent by the supplier, the material does not meet the requirements

2. The hardness level of the outer hexagon bolt is not good. Some customers need 8.8, but the delivery is 4.8.

3. The head of the outer hexagon bolt is poorly punched, and the head is tilted.

4. The outer hexagon bolts are broken.

5. The thread of the outer hexagon bolt is bad. The thread can’t pass through the stop gauge and other problems

6. If the outer hexagon bolts are iron, carbon steel. Poor plating may also occur. Not meeting the salt spray test time required by the customer

Of course, the more common hexagon bolts are definitely more than the six mentioned above. But these 6 are relatively common. Here is a summary of the common bad phenomena of these 6 outer hexagon bolts. In the future in production and sales, more attention should be paid.