Diameters: 5 MM to 100 MM or 3/16" to 4" Stock Range: Plain Washers, Square Washer, Spring Washer, Heavy Washer, Sample Drawing/As per customer requirements. Finish/Colours: Hot Dip Galvanized (HDG), Zinc Plated,Bright Finish, Golden Plated, Yellow passivation, Self/Black/ natural, Cadmium/ Tin Plated, Mechanical.