why stainless steel screws and stainless steel nuts cannot be used together

Do you know why stainless steel screws and stainless steel nuts cannot be used together? Everyone knows that self tapping screws do not need nuts, because they have built-in fastening function at the design. But you have heard that stainless steel screws cannot be used with nuts. Why is this?

This kind of opinion often appears, in fact, when installing the ultra-low temperature pipeline flange, if the stainless steel screws and nuts are used for tightening, it is easy to cause seizure after a period of time. This is because after tightening, the overall structure of the external thread and the anchor bolt will be slightly deformed, causing the thread to bite more and more tightly; or after a long time, the screw and the screw hole will cause a "combination" phenomenon.

At this time, if you want to remove the anchor bolts and nuts, you will need more and more force to overcome the sliding friction of the flange connection and overcome the kinetic energy caused by the production and processing of raw materials and the destructive intermolecular convergence. In general, It will be more and more difficult.

In order to better prevent the situation that cannot be disassembled and assembled, we can choose the following methods.
1.The material of the nut can be changed to a copper brass nut, which can prevent the joint phenomenon.
2. Wipe some lubricating grease on the screw compressor before screwing the nut.
3.The anti-seize agent can be used to avoid the corrosion, calcination, rust and damage of the parts under high temperature conditions.

The above is the whole content of this chapter. If you want to know more information about stainless steel screws, custom screw,custom bolt,custom fastener,machine screw,set screw,captive screw,micro screw,small screw,self tapping screw,security screw,sems screw.please pay attention to our website, Heatscrew screw manufacturer and screw supplier will share more information.