Bolt Kit - 6pt. (5pk) 1/2-20 x 2.250

The Bolt Kit - 6pt. (5pk) 1/2-20 x 2.250 from ARP delivers precision fastening solutions purpose-built for high-performance engine builds, racing applications, and critical structural assemblies where failure is not an option. This five-pack configuration addresses the reality that quality bolts don't exist in isolation—professionals and serious enthusiasts stock multiple fasteners because engine work, transmission rebuilds, and drivetrain modifications demand reliability across dozens of connection points. These bolts are engineered for environments where standard hardware fails under load, vibration, and thermal cycling.

The 1/2-20 thread specification (1/2-inch diameter, 20 threads per inch) represents a mid-sized fastener common in engine block work, intake manifold assembly, and cylinder head applications where clamping force and vibration resistance matter. ARP's 6-point design—a hexagonal socket head configuration—provides superior engagement compared to standard 12-point heads, reducing cam-out risk during installation on seized or corroded fasteners. The 2.250-inch length accommodates typical through-bolt applications in engine rebuilds and transmission housings, while the five-pack quantity reflects real-world workshop needs where batches of identical fasteners are consumed during major mechanical work. ARP's manufacturing standards ensure consistent hardness, tensile strength, and dimensional tolerance across the entire kit.

Engine builders, performance shops, and motorsports competitors rely on this bolt kit during complete powerplant assembly, where torque specifications and fastener preload directly impact horsepower delivery and longevity. Military and law enforcement equipment specialists also stock these fasteners for critical weapon system maintenance, vehicle repairs, and load-bearing hardware replacement where metallurgical integrity is non-negotiable. Proper installation requires torque wrench application per ARP's specifications and compatible 3/8-inch drive socket tools; verify application requirements before ordering to ensure correct thread pitch and length for your specific assembly.