1/2-13 x 2.750 6pt Bolt Kit (5pk)

The ARP 1/2-13 x 2.750 6-Point Bolt Kit (5-pack) is a precision fastener assembly engineered for high-performance engine and chassis applications requiring chromoly strength with corrosion resistance. Each bolt in this five-piece kit features a 1/2-inch diameter with 13 threads-per-inch (TPI) pitch, a 2.75-inch length, and a 9/16-inch hex head designed for secure, repeatable torque applications. The black oxide finish provides both wear resistance and a finished appearance suitable for visible mounting locations.

Chromoly steel construction (ARP's standard proprietary alloy) delivers tensile strength superior to standard mild steel, critical for fastening applications subject to vibration, thermal cycling, or dynamic loading. The 6-point head geometry distributes load across a wider surface area than 4-point designs, reducing the risk of fastener rounding and ensuring consistent hex-to-socket engagement during installation and removal. Black oxide plating resists surface oxidation in moisture-exposed environments better than bare steel, extending fastener lifespan in engine bays, under-vehicle locations, or coastal storage conditions.

This fastener kit serves engine builders, transmission specialists, off-road suspension fabricators, and motorsports teams requiring reliable chromoly bolts for critical assemblies. The 1/2-13 x 2.750 specification is commonly used in engine block, intake manifold, transmission mount, and suspension bracket applications where standard hardware lacks sufficient strength. Five bolts per kit allow maintenance or repair of multi-bolt assemblies or inventory for future service intervals.

ARP is the industry standard for premium fastening solutions in performance and racing applications, known for consistent metallurgy and dimensional accuracy. The universal design of this bolt kit makes it compatible with any application that accepts a 1/2-13 x 2.750 fastener, from light-duty assembly to high-horsepower builds requiring repeatable, verified holding power.