S/S Stud & Nut Kit (16) 8mm x 1.25in x 45mm

The ARP Stainless Steel Stud & Nut Kit (16) with 8mm x 1.25 threads delivers precision fastening for engine assembly and high-performance automotive applications. This complete 16-piece set combines polished stainless steel studs and 12-point nuts, engineered for demanding environments where corrosion resistance and structural integrity are non-negotiable.

Each stud measures 8mm in diameter with 1.25mm thread pitch and 1.75 inches in length, meeting universal fastening specifications across cylinder head mounting, intake manifold assembly, and other critical engine components. The 12-point nut design distributes load evenly across more engagement surfaces than traditional 6-point nuts, reducing stress concentration and improving clamp load retention under vibration. Polished stainless construction resists oxidation in high-temperature engine bays and wet conditions, extending service life compared to mild steel alternatives.

This kit suits engine builders, performance automotive technicians, and restoration specialists who require reliable, corrosion-resistant fastening for cylinder head work, turbocharger mounting, and fuel rail assembly. The stainless steel construction eliminates galvanic corrosion risk when used alongside aluminum cylinder heads or manifolds, a common failure point in mixed-metal assemblies. Whether for street, race, or marine engine applications, ARP's fasteners provide the dimensional consistency and material quality that professional builds demand.

ARP (Aircraft Research Products) is recognized in motorsports and high-performance automotive circles for precision-manufactured fastening solutions. Their stud and nut kits are specified by engine shops and OEM builders because of consistent thread geometry, predictable clamp load behavior, and superior material control—factors that directly impact engine reliability and longevity.