fastener Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass, Aluminum, etc Standard: DIN, BS, IFI, JIS, ISO,GB ... : DIN125, DIN9021 ,DIN440 or non standard(2) Material: low carton steel, steel, stainless steel(3) Grade: 4.8 or depending on your requirements(4 ... ) Surface treatment: HDG, zinc plated, Black or plain(6) Packing: carton on pallet or sack on pallet; depends on your requirements ...