The Dorman Double Ended Carbon Steel Round Fine Wheel Lug Stud is designed to meet the highest standards of quality and performance. These lug studs are made from high-grade carbon steel and undergo industry-standard proof-load testing to ensure strength and durability. They are also salt spray tested for 72-hours to simulate three years of corrosion resistance. With a thread diameter of 0.625", these lug studs are designed to fit most vehicles. FleetPride is your First Click in Heavy Duty®.