ARP 135-5601 Main Studs Kit for 4 Bolt Chevrolet Big Block 396 402 427 454

ARP 135-5601 Main Studs, 4-Bolt Main, Chevy, Big Block, Kit Main Bolt Style: 4-bolt Fastener Style: Stud Fastener Nut Style: Standard hex Works with Windage Tray: No Fastener Yield Strength (psi): 200,000 psi Nuts Included: Yes Washers Included: Yes These ARP main studs are made from 8740 chromoly steel and have a 190,000 psi tensile-strength rating. They are precision centerless-ground and thread-rolled to Mil-S-8879 specs, with a black oxide finish for corrosion resistance. The kits come complete with hardened washers and high-strength hex nuts.