... 45 Steel after heat treatment is Grade 8.84—Finishing:Zinc Plated,Phosphated,Dacromet,Black Oxide5---As the professional manufacturer in China ... ,22mm,24mm,27mm,30mm,ect6Surface protection :Bake paint,Black Oxide,Zinc Plated,Phosphate,Electrophoresis,,Dacromet etc7)Thread Pitch:1.5mm,1.75mm ... SHOP:PACKING PHOTO: High tensile Hub/Wheel Bolt for Nissan with Nut