Spring washers

Spring washers are widely used in the bearing and non-bearing structures of general mechanical products. They are characterized by low cost and easy installation, and are suitable for parts with frequent assembly and disassembly. However, the spring washer's anti-loose ability is very low! Especially in the current European and American countries requiring high reliability products, the adoption rate is extremely low, especially the important bearing structure connection parts have long been abandoned for many years. Our country has some applications in military industry, but it has been improved to stainless steel. It is said that steel spring washers have long been banned from use in CASC! It is also said to be very unsafe, for two reasons 1 is "expansion ring" 2 is hydrogen embrittlement.