Bolt Kit - 6pt. (5) 3/8-16 x 1.500

The Bolt Kit - 6pt. (5) 3/8-16 x 1.500 from ARP is a precision fastener set engineered for high-stress tactical, automotive, and industrial applications where reliability under extreme conditions is non-negotiable. This five-bolt kit serves operators, gunsmiths, and equipment manufacturers who demand fasteners rated for vibration resistance and secure clamping in critical assemblies. Whether you're building AR platforms, securing optic mounts, or assembling duty gear components, ARP's reputation for uncompromising quality makes this kit the choice of military armorers and law enforcement gunsmiths nationwide.

These 3/8-inch diameter bolts feature a 16 threads-per-inch (TPI) pitch and 1.500-inch length—dimensions optimized for securing components where standard fasteners fail under recoil impulse and sustained pressure cycling. The 6-point head design (versus 4-point) provides superior grip geometry, reducing fastener slippage during installation and removal, critical for maintaining zero on precision optics or preventing catastrophic failure in load-bearing assemblies. ARP's proprietary manufacturing process and material composition deliver consistent tensile strength and corrosion resistance, essential traits in field environments where replacement may be impossible for extended deployments.

This bolt kit is ideal for gunsmiths rebuilding tactical rifles, armorers performing maintenance on crew-served weapons, and precision-equipment technicians assembling systems where fastener failure creates liability or mission failure. The compact 0.33-pound weight and precision dimensions ensure compatibility with standard 3/8-16 tapped holes found in most modern tactical platforms, receiver picatinny mounts, and equipment chassis. Proper installation with appropriate threadlocker and torque specs (typically 25–35 ft-lbs for most applications) ensures longevity and repeatable performance across multiple duty cycles.