1. The quality of raw materials used in stainless steel screws is poor, and the quality of stainless steel screws is not good. There are many impurities, impure, resulting in insufficient hardness of stainless steel screws
2. The customer uses too much force when using stainless steel screws. Generally, you do a torque test to see how much the minimum breaking force is, and then adjust the torque. If the screw torque is required to be high, the screw must be heat treated. At present, the stainless steel 410 material can be heat treated. The surface hardness of the heat treated stainless steel 410 screw is HV580-680, and the core hardness is HV350-450.
3. The production process of stainless steel screws. For example, stainless steel screws with eccentric head and eccentricity, and the Q value is too deep and the R position design is too small during the down punching operation during production.
4. Check whether the pre-hole is suitable, the pre-hole will be broken when the screw is too small. Therefore, when we buy stainless steel screws, we must recognize and be optimistic, in case what we buy back is inferior products, which will bring unnecessary trouble to ourselves in the process of use.
