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The ARP 5/16" ID, 13/16" OD chamfer washer combines a larger outer diameter with a chamfered edge for improved seating on angled surfaces, sized for 5/16-inch hardware. Intended for engine and mechanical assemblies, the chamfered profile aligns fasteners and reduces edge interference while offering broader load distribution. Use when a precise, tapered seating surface is required.
ARP 5/16 ID 13/16 OD chamfer washers
