The Drive Shaft Bolt is a one time use part and requires replacement when servicing the drive shaft. The Drive Shaft Bolt is a strong mating point, securing the drive shaft to the axle flange. Our Drive Shaft Bolts are durable in design, featuring a black oxide coating for extra protection against corrosion and a longer service life. All Dorman products are engineered in the United States and backed by 100 years of automotive aftermarket experience. Our solutions are thoroughly tested and inspected, and if you experience any difficulty installing or using our parts, we have a dedicated technical support team of ASE Blue Seal certified professionals ready to help. To learn more about our quality and innovation, visit DormanProducts.com.