SKU: ARP621-1000
UPC: 672036016227
MPN: 621-1000
The S/S Bolt Kit - 6pt. (5) 1/4-20 x 1.000 from ARP represents a critical fastening solution for automotive builders and mechanics who demand reliability under extreme conditions. These stainless steel bolts are engineered for applications where corrosion resistance, tensile strength, and repeatable clamping load are non-negotiable—from engine bay work to suspension modifications and fuel system assemblies. When stock hardware fails or corrodes, this five-piece kit offers a direct upgrade path for professional and enthusiast mechanics alike.
Each bolt in this kit features a 1/4-20 thread pitch with a 1.000-inch length and a six-point socket head design, delivering superior torque transfer and reduced fastener slippage compared to Phillips or slotted alternatives. The stainless steel construction provides inherent corrosion immunity and maintains its integrity in high-temperature engine environments or moisture-prone underbody installations. ARP's manufacturing precision ensures consistent clamp loads and eliminates the risk of overtightening or stripping that often plagues inferior fasteners, making these bolts suitable for critical structural and sealing applications where vibration loosening is a concern.
This bolt kit works best for engine block modifications, intake manifold securing, fuel rail retention, alternator brackets, and any custom automotive work requiring small-diameter, high-strength fasteners in corrosive environments. The compact five-piece quantity suits detailed restoration projects, prototype builds, and targeted replacement work where buying bulk hardware would be wasteful. Compatibility spans virtually all domestic and import platforms; verify thread pitch and length requirements against your specific application before installation to ensure proper seating and torque specifications.
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