This 3.625 inch serrated wheel lug stud with a 1.247 inch knurl diameter is a durable and reliable option for most wheel lug stud applications. Made of carbon steel and featuring a black finish, this 8 grade bolt has a 1.5 inch head diameter, 1.22 inch shoulder diameter, and 1.335 inch shoulder length. It is available with left or right hand thread direction and has a fine thread type. Sold in a pack of 10, this lug stud has undergone industry-standard proof load testing to ensure strength and meets SAE automotive industry standards for strength and hardness. It has also been corrosion tested for 72 hours of salt spray testing, simulating 3 years of corrosion resistance.