hexagon bolt 1.material:mild steel,45#steel,40Cr steel 2.surface: ... .8,8.8,10.9,12.9 hexagon bolt, high strength bolt, wheel parts, high tensile hex bolt Certificate: ISO9001:2000High Quality Strengthen: Grade ... , phosphated, black Oxide...Outer packing: standard neutral carton box fastened with pallet Satisfactory services:We can produce wheel bolts as per ...