... 10.9 45 Steel after heat treatment is Grade 8.84—Finishing:Zinc Plated,Phosphated,Dacromet,Black Oxide5---As the professional manufacturer ... Names: FUZHONG/wheel bolt Series4)High quality strength:grade8.8,9.8,10.95Diameter:10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm ... thread9)Material:mild steel,1035steel,1045steel,5140steel,A3,45steel,40Cr10)Shape:round,round flat,half-round ,half-round flat.square, ...