Black Washers - 8mm ID x .575 OD (10)

The ARP Black Washers – 8mm ID x .575 OD (10) are precision-engineered flat washers designed for critical fastening applications where load distribution and vibration resistance are essential. These washers serve as spacers and load spreaders in automotive, industrial, and mechanical assembly work, protecting surfaces from bolt head indentation and ensuring consistent clamping force across fastened joints.

Manufactured from durable steel with a black oxide finish, these washers deliver superior corrosion resistance and durability in demanding environments. The 8mm inner diameter (ID) accommodates standard 8mm fasteners, while the 0.575-inch outer diameter (OD) provides an optimal bearing surface to distribute load across a wider area—critical for preventing surface damage on aluminum, composite, or thin-wall components.

These washers are ideal for builders, mechanics, and engineers who demand reliable hardware for various assembly projects. Their design maintains precise stack height while delivering the rigidity needed to prevent fastener rotation and micro-movement during operation or vibration cycles. The black oxide coating not only enhances corrosion protection but also maintains a professional appearance in visible assemblies.