Nuts are parts that closely connect mechanical equipment. Nuts and bolts of the same specification can be connected together through the inner thread. The same is true for American products. For example, 1/4-20 nuts can only be matched with 1/4-20 screws.
A nut is a nut that is screwed together with a bolt or screw to tighten. All components that must be used in manufacturing machinery are divided into carbon steel, stainless steel, non-ferrous metals (such as copper) and other types according to different materials
