Description: The screw post is a component composed of a screw with a flat head cap (with or without a drive slot) with a mechanical thread and a nut with a flat head cap.It is generally made of aluminum, copper, carbon steel, stainless steel, and other materials.According to the thickness of the booklet, select the screw corresponding to the length of the nut rod, and insert the two ends into the holes to connect and lock.On office products, furniture, DIY handicrafts, and other items. Screw posts are also very common, providing very simple installation, disassembly, assembly, maintenance, etc.Mechanical threads provide strong precision connection and locking force, can be repeated used many times, every time like new.