The Dorman 3/4" Carbon Steel Serrated Round Wheel Lug Stud is designed to meet SAE automotive industry standards for durability and strength. It is salt spray tested for 72-hours to simulate three years of corrosion resistance and undergoes industry-standard proof-load testing to ensure strength. The black oxide finish provides additional corrosion resistance. With a head diameter of 1.278", shoulder diameter of 0.784" this wheel lug stud is the perfect choice for your automotive needs. FleetPride is your First Click in Heavy Duty®.