Spring washers in the screw industry, often called the spring pad. Its materials are stainless steel and carbon steel, carbon steel that is iron. Commonly used spring washer size specifications are M3, M4, M5, M6, M8, M10. M12, M14, M16. These specifications are more commonly used. Spring washer national standard GB / T 94.1-87, the standard provides specifications for the 2-48mm standard spring washers. Reference standard GB94.4-85 "elastic washers technical conditions spring washers."
Spring washers in general mechanical products bearing force and non-load-bearing structure is widely used, which is characterized by low cost, easy installation, suitable for frequent assembly and disassembly parts. But the spring washers of the anti-loose ability is very low! Especially in the current European and American countries require high reliability products in the adoption rate is very low, especially the important load-bearing structure connection parts have long been abandoned for many years. Our country has some applications in the military, but has been improved for the stainless steel material. It is said that steel spring washers in the CASC has long been banned! Also said to be very unsafe, because there are two 1 is "up circle" 2 is a hydrogen embrittlement.