Non-Standard Metal Parts manufacturer / supplier in China, offering Carbon Steel Black High Strength Plain Washer DIN125A / GB97 Flat Washer M5-M48 Factory Customized, DIN125 Stainless Steel Heavy Industrial Flat Washers Plain Washers Zinc Plated Carbon Steel Flat Washer, A2 A4 304 316 Stainless Steel Nuts DIN934 Hexagon Nuts, Carbon Steel Hex Nuts DIN 934 M3-M110 and so on.