With the appropriate corrosion resistant screws, our slimline washers grip tightly and become virtually flush with the surface of the Multiboard when screwed in tightly. We supply washers in both metal and plastic options and they come in bags of 100. Metal washers are also available buckets of 500. The diameter of the hole in the Marmox plastic washer is 4mm. The hole in the metal washer is 6mm wide. Flattens when screwed tight Sold individually
