S/S Bolt Kit - 6pt. (5) 5/16-18 x 4.000

The S/S Bolt Kit - 6pt. (5) 5/16-18 x 4.000 from ARP is a precision fastening solution engineered for demanding tactical, military, and high-performance applications where reliability under extreme conditions is non-negotiable. This stainless steel bolt kit delivers the corrosion resistance and tensile strength required in field-critical assembly work, from small-unit weapons platforms to vehicle-mounted systems.

Whether you're building a suppressor assembly, securing optic mounts, or assembling critical gear components, this fastener kit provides the dependable hold your mission demands. Manufactured from stainless steel with a 6-point socket head design, the 5/16-18 x 4.000 bolt geometry offers superior clamping force and stress distribution compared to slotted or Phillips-head alternatives. The 6-point cap-screw configuration minimizes stripping risk under high-torque applications and provides superior leverage in tight or gloved-hand installation scenarios.

Each kit includes five bolts, allowing for redundancy and spare inventory—critical when you cannot afford field failure. The 4.000-inch length accommodates deep-threaded assemblies and multi-layer component stacking common in tactical configurations. Law enforcement armorers, military mechanics, and tactical equipment builders rely on ARP fastener kits for weapons systems, rail-mounted accessories, and load-bearing hardware where vibration-induced loosening and corrosion are constant threats.