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300 pcs) Metric DIN 9021 M8 Large OD Flat Washer Steel Yellow Zinc Plated: Amazon.com: Industrial & Scientific
Amazon.com: (7000pcs) DIN 9021 M4 Washers (4.3mm ID) OD ~ 3 x Screw Dia A2 Stainless Steel Ships Free in USA by Aspen Fasteners : Industrial & Scientific