Material: Low Carbon Steel, Medium carbon steel(1035/1045), Alloy carbon steel, Stainless Steel, etc. Grades: 4-12 Standard:DIN6923 Material:Steel Style:Flange Nut Dimension:M3-M16 Standard: DIN, ASTM Grade: DIN: 4-12, SAE GR.A-GR.8 Finish: Plain, Black, Zinc plated, Hot-dipped galvanized, Dacromet, Nickel plated, etc Size: M3-M72 Kingpluse Industry is a fasteners and hardware manufacturer, as well as an exporter with a wide range of industrial products located in Shanghai.We have advanced production facility, abundant technical forces and complete quality assurance system.We can produce various kinds of nuts.