Bolt Kit 6pt 5pk 5/16-18 x 3.500

The Bolt Kit 6pt 5pk 5/16-18 x 3.500 from ARP represents the gold standard for critical fastening in high-performance automotive applications. Whether you're assembling an engine block, securing cylinder heads, or anchoring suspension components, these premium bolts deliver the reliability that separates a bulletproof build from one that fails under stress. Designed for mechanics and enthusiasts who demand consistency across every fastener, this five-pack kit ensures you have matched hardware for critical assembly points where bolt stretch, preload accuracy, and material integrity directly impact engine longevity and vehicle safety.

ARP's 5/16-18 x 3.500 bolts feature a 180,000 PSI tensile strength rating and precision-engineered 6-point heads that distribute load more evenly than standard fasteners, minimizing the risk of head stripping during critical torque sequences. The 5/16-18 thread specification provides optimal grip strength for mid-size applications, while the 3.500-inch length accommodates deep-pocket engine blocks and transmission housings common in both stock and modified powerplants. Each bolt in this five-pack undergoes rigorous quality control to ensure dimensional consistency and material purity—critical when you're torquing critical fasteners to precise specifications and relying on bolt stretch as a preload indicator rather than guesswork.

Professional engine builders, transmission specialists, and serious DIY mechanics trust ARP bolts for block deck work, head studs, and main cap applications where failure is not an option. This kit is ideal for small-block Chevy, Ford, and Mopar rebuilds, as well as LS engine modifications where factory fasteners fall short under boost or nitrous oxide. Always use an ARP bolt socket and apply recommended preload values; these bolts repay precision with reliability that will outlast multiple engine seasons.