... Bolt) --Grade 8.8/10.9/12.9; --Black Oxide, Phosphate, Zinc Coating.... Type: Wheel Bolt & Nut Trilex Bolt (D Bolt ... Bolt)--Grade 8.8/10.9/12.9; --Black Oxide, Phosphate, Zinc Coating....Type: Wheel Bolt & Nut Details:1. Material: 45 ... Grade: 8.8,10.9,12.9grade3.Surface: Black Oxide, Phosphate, Zinc Coating....4.We can make products strictly according to ...