Hub bolt with nut Self-Marketing, Competitive Price Excellent Quality Wheel Bolt, Hub Bolt, Bolt Lock for heavy duty truck. 1. Material: 40 Cr(ASTM 5140) 2. Strength:8.8/10.9/12.9 grade 3. In accordance with customer requirement 4.. Finish: black, electronic galvanized, hot-dipped galvanized We can supply packaging as your design and strictly according to your requirement(drawings or samples) Looking forward to establish Long-Term Cooperation