1) Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI,ASME,Non-Standard 2) Size: M3-M76 3) Material: Carbon Steel, Alloy Steel 1) Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI,ASME,Non-Standard2) Size: M3–M763) Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass, Aluminum, etc.4) Finish: Zinc Clear, Zinc Yellow, Black, Nickel-plating, Tin-plating, Chrome- plating, Dacromet,Mechanical Galvanizing, Hot- ...