Spring washer is made of stainless steel and carbon steel. The commonly used spring washer sizes have M3, M4, M5, M6, M8, M10 M12, M14, M16, M24 and so on. These specifications are commonly used. The national standard GB93 with raw material 65Mn spring steel or 70# carbon steel, 3Cr13, stainless steel SUS304 or SUS316 and phosphor bronze are usually used.
Standard spring washer (gb/t93-1987)
Light spring washer (gb/t859-1987)
Heavy duty spring washer (gb/t7244-1987) , also known as spring meson, also has German standard DIN127 and ANSI standard.
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