S/S Bolt Kit - 12pt. (5) 5/16-18 x 1.250

The ARP Stainless Steel Bolt Kit—12pt. (5) 5/16-18 x 1.250 is a five-piece fastener set engineered for precision applications where corrosion resistance and reliability are non-negotiable. Manufactured by ARP, a brand recognized for aerospace-grade fastening solutions, this kit delivers polished stainless steel construction ideal for marine environments, engine builds, and tactical equipment assembly where salt air exposure or moisture presents a corrosion risk.

Each bolt features a 5/16-18 thread specification and 1.250-inch length, paired with a 3/8-inch 12-point head design that accepts both standard and metric sockets for secure engagement. The 12-point head geometry distributes clamping load across more contact points than traditional 6-point designs, reducing fastener slip during high-vibration applications. Polished stainless steel resists corrosion in harsh conditions while maintaining clean aesthetic standards in exposed installations. This universal fastener set works across marine engines, offshore equipment, recovery gear, and custom builds where durability and appearance matter equally.

Operators and technicians working in saltwater environments, coastal bases, or equipment that endures moisture exposure benefit from stainless steel fastening that resists pitting and thread degradation. The five-bolt quantity supports repair tasks, component assembly, and replacement operations where corrosion-prone hardware fails. ARP bolt kits are favored by engine builders, fabricators, and field professionals who demand predictable fastening performance without sacrifice to longevity or appearance.

Stainless steel fastening offers a critical advantage in corrosive environments: unlike plated carbon steel bolts that flake and corrode, stainless steel maintains structural integrity and thread reliability across years of exposure. The polished finish adds professional appearance to visible assemblies while delivering functional corrosion defense—a combination that commodity fasteners cannot match at comparable price points.