A square section spring washer designed to prevent the nut from loosening. Corrosion Rating1 - Clean, dry & low humidity environmentsDescriptionA square section spring washer designed to prevent the nut from loosening. DIN StandardDIN 7980FinishZinc & Clear Cr3Hole Dia. mmM6Length mm9.9MaterialCarbon SteelOuter Dia. mm10.0Pack Dimensions L x W x H mm62 x 48 x 32Pack Weight kg0.240Product CodeWSP6ZSize mmM6Thickness mm1.6Washer TypeSpringWidth mm3.2.