In terms of material, the lengthening screws are carefully selected according to the differences in the use environment. High-strength carbon steel lengthening screws, high strength, high hardness, after appropriate heat treatment, the yield strength is significantly increased, can withstand huge tension and pressure, often used in heavy machinery manufacturing, such as mining equipment, port cranes, etc., to ensure that the parts are closely connected under high load, high-strength operations are not loose. Stainless steel material stands out with excellent corrosion resistance, containing chromium, nickel and other alloying elements, so that it is safe in humid, acid and alkali and other corrosive environment, widely used in outdoor facilities, such as seaside guardrail, chemical plant pipeline support, many years of use can still maintain a good fastening state. The aluminum alloy extension screw is lighter in weight, and for some areas with strict restrictions on self-weight, such as aerospace equipment and high-end racing cars, it can meet the needs of connection fastening, and help reduce the overall weight and improve the performance of the equipment.
In terms of performance, the extension screw has excellent connection stability. Due to the length of the screw, the screw engages fully with the nut, which can evenly disperse the force and effectively prevent the loosening and displacement of the parts. In the scenario of frequent mechanical vibration or shock, suitable anti-loosening washers, such as spring washers and nylon lock washers, can be further strengthened to ensure reliable connection. Its precise thread processing accuracy ensures a smooth fit with the nut, smooth tightening process, reduce thread wear and extend service life. In addition, some high-end lengthening screws also undergo strict surface treatment in the production process, such as galvanized, nickel plating, etc., which not only enhances the appearance protection, but also improves the corrosion resistance to a certain extent, so that it can better cope with the complex and changing use environment, and escort the stable operation of many key projects and equipment.
