Assortment box of high quality Plain Steel Heavy Gauge Washers, BS4320 Form A. Contains approx 514pcs of the most popular sizes. Supplied in a handy sturdy storage case with a grid on the box for quick and easy selection. Part Size Qty Plain Steel Washers Metric Heavy Gauge ZP to BS 4320 Form A 130/1 M3 Form A 150 130/2 M4 Form A 100 130/3 M5 Form A 80 130/4 M6 Form A 60 130/5 M8 Form A 60 130/6 M10 Form A 40 130/7 M12 Form A 24 Total 514