Qualfast: M10 Squae Single Coil Sping Washe DIN 7980 Single Coil Square Section Spring Washers, Self-Colour, DIN 7980. MPN: 37200.100.001 EAN: M10 Squae Single Coil Sping Washe DIN 7980 Attributes: Box Quantity: Diameter: 16mm For nom. size: M10 Hole Diameter: 10.2mm Leading Standard: DIN 7980 Material: Spring Steel Surface Treatment: Plain Thickness: 2.5mm