ARP Washer 7/16in ID 5/8in OD Machined Chamfer Black

ARP Washer — 7/16" ID × 5/8" OD Machined Chamfer (Black) High-performance machined washer engineered by ARP for precision fastening in demanding automotive and motorsport applications. Finished in durable black for corrosion resistance and professional appearance. Inner diameter: 7/16" (0.4375") Outer diameter: 5/8" (0.625") Profile: Precision machined with chamfered edge for smooth load distribution Finish: Black protective coating for longevity and reduced galling Ideal use: Cylinder head studs, high-torque fasteners, suspension and engine assembly This washer provides exact sizing and a chamfered seat to minimize stress concentrations and ensure consistent clamp load. Built to ARP's exacting quality standards, it pairs reliably with high-strength bolts and studs where repeatable torque and alignment matter. Why choose ARP: Trusted performance, precision machining, and a finish that resists corrosion — perfect for racers, engine builders, and anyone demanding dependable fastener components.