Heavy duty flat washer, conforming to the DIN 7349 standards, designed for heavy-duty applications. With a hardness class of 200 HV for sizes over M16 (and 100HV for smaller sizes), it ensures optimal strength and durability. The yellow passivated zinc plating offers excellent corrosion resistance, making it ideal for a wide range of industrial uses where reliable load distribution and bolt protection are essential. Perfect for structural bolting and other demanding applications.