If you're looking for main studs that are recommended over bolts whenever possible, look no further than ARP 250-5802 Main Studs. There are several key reasons for this recommendation. First, it's easier to obtain more accurate torque readings because studs don't "twist" into the block like bolts do. This also puts less force on the block threads, which contributes to improved block life. Main studs are a good option for high horsepower builds. Finally, they make engine assembly and alignment of caps much easier. All kits come complete with hardened parallel-ground washers and high quality nuts. The studs are manufactured from 8740 chrome moly steel and heat treated to 200,000 psi tensile strength.