Nuts are normally used with bolts to secure components. There are many different type of nuts. Some of them are specially designed to prevent the nut from loosening.
Zinc-plated steel nuts are very common. These nuts resist corrosion in wet environments.
Standard: DIN, IFI, DIN, BSW, ISO
Materials: Carbon Steel, Alloy Steel, Stainless Steel, Brass etc.
Grade: CL4, 5, 6, 8, 10, 12; SAE J995 Gr.2, 5,8;
Finish: plain,(blue, yellow) zinc plated, black oxide, HDG etc
Supply ability: around 1000 tons per month.