S/S Bolt Kit - 12pt. (5) 1/2-13 x 1.000

The S/S Bolt Kit - 12pt. (5) 1/2-13 x 1.000 from ARP delivers the fastening reliability that engine builders and performance mechanics demand for critical applications. Manufactured from premium stainless steel, this five-piece bolt set is engineered for durability in high-vibration environments where standard fasteners fail prematurely. Whether you're assembling a race engine, securing intake manifolds, or installing aftermarket components, these bolts provide the corrosion resistance and strength needed for long-term reliability under extreme conditions.

Each bolt in this kit features a 12-point head design that distributes clamping force more evenly across fastening points compared to 6-point alternatives, reducing the risk of bolt stretch and thread galling. The 1/2-13 UNC thread specification and 1.000-inch length provide optimal engagement in standard automotive applications, delivering consistent preload without bottoming out in shallow boss holes. Stainless steel construction resists oxidation and seizing, eliminating the corrosion issues common in aluminum-headed engines and salt-exposure environments. The precision manufacturing tolerances ensure repeatable torque values and predictable clamping behavior for critical engine assembly work.

Professional engine builders, drag racing teams, and automotive enthusiasts running modified powerplants choose ARP fasteners for their documented performance in high-heat and high-boost applications. This bolt kit is ideal for intake manifold bolts, valve cover fastening, water pump installation, and other engine-bay components where vibration and thermal cycling demand superior fastener integrity. The compact 0.52-pound weight and convenient five-piece count make this kit practical for multiple assembly points or replacement sets. Verify thread size and length compatibility with your specific engine block and component before installation to ensure proper engagement and load distribution.