Provides a large clamping surface and therefore spreading the load of a fastening. Corrosion Rating1 - Clean, dry & low humidity environmentsDepth mm3.0DescriptionProvides a large clamping surface and therefore spreading the load of a fastening. FinishZinc & Clear Cr3Hole Dia. mmM12Length mm50MaterialCarbon SteelPack Dimensions L x W x H mm15 x 90 x 133Pack Weight kg0.110Product Code1250WHSPZPSize Hole Dia. x L x W x D mmM12 x 50 x 50 x 3Thickness mm3.0Washer TypeSquare PlateWidth mm50.