S/S Bolt Kit - 12pt. (5) 6mm x 1.00 x 20

The S/S Bolt Kit - 12pt. (5) 6mm x 1.00 x 20 from ARP is a premium stainless steel fastener set engineered for demanding engine builds and high-performance modifications. Whether you're assembling a stroker motor, upgrading head fasteners, or securing critical drivetrain components, this five-piece kit delivers the corrosion resistance and tensile strength that separates a professional-grade build from a temporary fix. Mechanics and enthusiasts rely on ARP bolts for applications where vibration, heat cycling, and chemical exposure demand superior reliability over standard hardware.

Each bolt in this kit features a 12-point head geometry—a critical design choice that provides superior load distribution and allows socket engagement from multiple angles during installation and removal without rounding. The 6mm diameter with a 1.00mm pitch thread combines versatility across engine bay applications while the 20mm length suits manifold studs, intake mounting, and accessory bracket fastening. ARP's stainless steel construction resists rust and oxidation in salt-air and high-moisture environments, eliminating the reliability concerns associated with grade-8 bolts that require coating maintenance. The controlled preload capability of ARP fasteners ensures consistent clamp load, which is essential for maintaining gasket seal integrity under sustained boost or high RPM operation.

This kit is ideal for engine builders, performance shops, and DIY enthusiasts tackling aluminum head conversions, turbo manifold installations, or transmission bellhousing upgrades where corrosion resistance and consistent tension matter. The 12-point head works seamlessly with both metric and standard 6mm sockets, making installation straightforward for technicians familiar with proper bolt sequencing and torque protocols. Five bolts provide sufficient quantity for small cluster replacements or as part of a larger fastener upgrade strategy on naturally aspirated or boosted platforms.