An essential fastening component for lifting machinery – screw nuts

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The screw nut is one of the most common components used for fastening in various lifting machinery devices. There are many types of screw nuts, with the most common being those that conform to national standards, British standards, American standards, and Japanese standards. Screw nuts can also be divided into single-nut and double-nut types. Compared to the former, double-nut types can handle greater loads, have a longer service life, and are easier to maintain. Currently, many manufacturers also use a preloading method with offset lead in the production of nuts, in order to increase the usable length of these nuts. Moreover, they strive to reduce the number of processing steps during manufacturing in order to cut costs. However, the performance achieved in this way still does not match the longer lifespan and higher precision of nuts with two nuts. Based on the material of the nut, they can be classified into several types such as carbon steel, high-strength steel, stainless steel, and plastic-steel. There is a significant difference in price among different grades of screw nuts. When choosing a nut, users should avoid blindly pursuing screws with high precision and high load capacity; instead, they should take into account various factors such as the material of the nut, its properties, **standards, and the requirements of the equipment, in order to select the nut part that offers the best cost-performance ratio.