What tensile strength bolts should i use for leaf springs?

For leaf springs, it's essential to use bolts with a tensile strength of at least 120,000 psi, typically made from high-strength materials like grade 8 steel or alloy steel. These bolts are designed to endure the significant loads and stresses experienced in suspension systems. Additionally, consider using bolts that are specifically rated for automotive applications to ensure reliability and safety. Always check manufacturer specifications for the exact requirements related to your specific vehicle or application.