Datasheet DIN 9021 washer A2, M6 7976257 Dimensions Finish Plain For Screw/Bolt Size M6 Inside Diameter 6.4 mm Material Stainless Steel Finish Plain Outside Diameter 18 mm Stainless Steel Type A2 Thickness 1.6 mm ENGLISH RS, Professionally Approved Products, gives you professional quality parts across all products categories. Our range has been testified by engineers as giving comparable quality to that of the leading brands without paying a premium price.