Non-standard screws - free high-quality screws

The non-standard screws are mainly other accessories that are not controlled by the company and are not specified by the country. The more mature an industry is, the higher the degree of generalization of standardization, the more standard parts, and the lower the industry cost. However, over-standardization should be avoided, resulting in monotonous product categories and low-end competition. There are many varieties of non-standard parts, there is no very standardized classification, are generally based on market needs and their own brand development, and extend the vitality of the product and independent research and development. Non-standard parts refer to the commonly used non-standard parts such as screws, keys, pins, rolling bearings and so on, which have been completely standardized in all aspects such as structure, dimensions and descriptive marking.