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The video showcases the nut manufacturing process. The stamping process mainly includes key steps such as steel stamping, tapping, heat treatment, and surface treatment. Pressure is applied to the metal material using a stamping die, causing plastic deformation at room temperature to form the basic shape of the nut. Stamping processes typically use stamping dies, which can be categorized as simple dies, progressive dies, or compound dies depending on the complexity of the process, to achieve basic steps such as blanking and punching. After the nut is formed, internal threads are machined using a tapping process to ensure the nut can be used with a bolt. Tapping can be done mechanically to create a precise thread profile. For higher strength nuts, heat treatment is used to improve the material's hardness and mechanical properties; this step may be omitted for lower strength nuts. The final step is surface treatment, using methods such as electroplating or blackening to enhance the nut's corrosion resistance and appearance.