Black Washers - 7/16 ID x 3/4 OD (10)

Black Washers - 7/16 ID x 3/4 OD (10) from ARP are precision-engineered fastener components designed for applications demanding superior strength and reliability. These special-purpose flat washers serve as critical load-distribution elements in high-performance engine builds, motorsports assemblies, and demanding industrial fastening. The set of ten washers provides essential backup stock for rebuilds, replacements, or multi-component projects where consistent quality across all fasteners is non-negotiable.

Each washer features a 7/16-inch inner diameter and 3/4-inch outer diameter with 0.12-inch thickness, manufactured from chromoly steel and finished in black oxide for corrosion resistance and visual consistency. The chamfered edge design reduces sharp corners that could bind under load or damage adjacent components, while the black oxide coating provides superior rust protection compared to bare steel—critical for longevity in engine compartments or outdoor storage. Chromoly construction delivers the hardness and fatigue resistance necessary for vibration-prone applications, ensuring washers maintain consistent clamp loads even under repeated stress cycles.

These washers are essential for engine builders, performance enthusiasts, and technicians assembling high-horsepower or high-RPM powerplants where factory fasteners require upgrade specifications. They work seamlessly with ARP fastening systems and are compatible with any threaded component requiring a 7/16-inch fastener with this load-bearing profile. Installation is straightforward: place the washer between the bolt head or nut and the work surface to distribute clamping force across a wider area, preventing surface damage and maintaining preload integrity through thermal cycling and mechanical stress.