Specifications Wheel Bolt 1---Material:Grade 8.8 or 10.9
2---Model: Hyundai hub bolt
3---Material: 45# 40Cr 35MoCr
4---Finishing: zinc
Wheel Bolt 1—Model:Benz wheel bolt 2—Specification: Thickness*Length 3—Material: 40Cr after heat treatment is Grade 10.9 45 Steel after heat treatment is Grade 8.8 4—Finishing:Zinc Plated,Phosphated,Dacromet,Black Oxide 5---As the professional manufacturer in China, we can develop many new Models following your drawing. Any questions,feel free contact me.