What are the reasons and countermeasures for stainless steel screw locking?

1. Stainless steel has excessive locking force and low thermal conductivity, which can easily cause thread locking. During the rotation process, stainless steel nuts are heated due to friction, and the thermal conductivity of stainless steel is relatively low. When the pressure and heat generated damage the chromium oxide layer, the metal teeth will directly block and the stainless steel will become soft, causing adhesion.

2. The inclination angle of thread fitting and the softness of stainless steel can both cause jamming. Uneven or tilted force during installation can cause the central axis of the screw and nut to tilt significantly, which can easily damage the tooth shape and cause locking if engaged.

3. When locking occurs, the torque must be greater than the frictional force of the stainless steel screw and nut itself in order to rotate.

4. When using stainless steel bolts and nuts, attention should be paid to keeping the central axis of the stainless steel screws and nuts vertical as much as possible to reduce deflection angle. When using a torque wrench or socket wrench, avoid excessive force and control the torque within a safe torque range. Try to use a manual wrench as much as possible to slow down the locking speed, keep the threads clean, and use lubricating oil to reduce the friction coefficient, reduce heat energy, and thus reduce adhesion. Alternatively, using stainless steel anti lock agents can have a significant effect on reducing the proportion of lock ups.