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This ARP washer pack contains ten black washers sized with a 9/16" inside diameter and a 1.00" outside diameter. Intended as service or replacement washers for fastener assemblies that match those dimensions, the set keeps mating surfaces protected and ensures consistent spacing during rebuilds or routine maintenance where correct washer size matters for fit and clamp distribution.
ARP 9/16in ID 1.00in OD Black Washers (Pack of 10)
