... .high quality Nut: detailed description 1NUT : hardware2 Standard: DIN ANSI/ASME, BS, GB, JIS, Non-Standard 3 Material: carbon steel 4 Grade: 4 ... Coating: plain, brass, black, zinc, HDG, Nickel, phosphate.6 Packing: standard export packing or according to your demand7 delivery time 60 ...