Stainless Steel-Spherical washers DIN 6319 are used for clamping on non-parallel surfaces.
When utilizing Stainless Steel-Hexagon nuts with spherical seating DIN 6330 type B the male washer is redundant.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.