S/S Bolt Kit - 12pt. (5) 3/8-16 x 2.500

The ARP Stainless Steel Bolt Kit – 12pt. (5) 3/8-16 x 2.500 is a precision fastener set engineered for applications demanding corrosion resistance and reliable clamping force. ARP has built its reputation on high-strength fasteners for engine work, motorsports assembly, and demanding mechanical applications where failure is not an option. This five-piece kit delivers polished stainless steel construction designed to withstand harsh environments where standard fasteners degrade.

Each bolt is sized 3/8-16 with a 2.5-inch length and features a 12-point head geometry, which distributes load more evenly across socket contact points compared to six-point heads—critical when torque specifications are tight and bolt preload must be consistent. The metric 3/8-16 thread pitch is common in machinery, manifold work, and structural fastening. Polished stainless steel resists oxidation in humid, salt-air, or chemical environments while maintaining clean appearance during inspection and assembly. ARP fasteners are precision-manufactured to tight tolerances, ensuring that critical torque values are repeatable and reliable across the entire kit.

This kit serves motorsports builders, marine applications, firearms component assembly, and industrial maintenance where corrosion prevention and fastening integrity matter. The universal design makes these bolts suitable for any application requiring 3/8-16 fastening in environments where stainless steel outperforms hardened steel. Weight of 0.49 lbs reflects the density of quality stainless construction across the five-piece set. Operators and technicians who have worked with ARP fasteners know that consistent torque hold and corrosion immunity reduce maintenance cycles and eliminate fastener failure as a variable in critical assemblies.