What should we concern about when purchasing custom stainless steel M8 hex socket screw

For fasteners, if you purchase without knowing it, it is easy to be deceived. After all, the fastener industry is not that simple. For example, we need to pay attention when purchasing m8 stainless steel hexagon socket screws. What should we concern about when purchasing?

1. What is the specific grade of stainless steel in m8 stainless steel hexagon socket screws?

For those who are not familiar with screws, they think stainless steel is stainless steel, and it makes no difference. But for the familiar, there are many types of stainless steel, such as 201, 304, 316, etc. The composition, performance and price of different grades of stainless steel are different.

The price of 201 stainless steel screws is very cheap compared to other grades of stainless steel, and the quality is not very good, it is easy to rust, and the corrosion resistance is not very good.

The 304 grade stainless steel is used more in the screws. After all, the corrosion resistance of the screws produced by this grade is also relatively good, and the quality is also good.

2. Whether it can pass the gauge?

The thread pass gauge is mainly to confirm that the manufacturer has not cut corners. But this is only suitable for machine screws.

Some screw manufacturers do not use standard material diameters when producing screws, but instead use smaller raw material diameters for production. The outer diameter of the screw thread produced by this kind of screw is consistent, and it can pass the regulation, but cannot be stopped.it is not acceptable for us.

3. Whether there are defects on the surface and whether the size meets the requirements

If it is used for appearance parts, the surface of the screw must not be defective, otherwise it will affect the aesthetics, and the size must be consistent, otherwise there will be problems during assembly.

When purchasing m8 stainless steel hexagon socket screws, it is not only necessary to pay attention to these points, in addition to the delivery of the screws, after-sales issues and so on.