... 3.SGS,ISO 4.Zinc Nickel plated,Black Oxide,Hdg astm a325 stainless steel hex bolts 1. Standard:DIN, ANSI, BSW ... . stainless steel , A2-70, A4-70, A4-804. Dimension of Nut bolt: M2-M100, Length: 6mm-1000mm5. OEM&Customize non-standard ... Galvanized, Nickel, phosphate black, DACROMET coating, etc.7. Packing of Nut bolt: 20-25Kg per Carbon, 36-64Carbon/Pallet. or accoding ...