Custom m2.2 carbon steel round head zinc plated machine screw for electronic equipment

Industry knowledge：

What is stainless steel anti loose screw? As the name suggests, it is to prevent loose screw. It was invented in the United States. It uses thermal spraying technology to spray special engineering plastic with nylon as the main component on the thread. When the thread is tightened, the engineering plastic is extruded to produce strong reaction force and friction force, so as to prevent the screw from retreating and achieve the effect of anti loosening.