Hexagon Flange Bolts with Plain Flange, made from robust steel material with a resilient zinc plated yellow passivated surface treatment. These Class 8.8 flange bolts feature a hexagon head for optimal driving features. The right-thread direction and metric thread ensure a secure fit for a range of applications. The plain flange design spreads built-up forces and reducing surface pressure. Perfect for covering large or oversized holes without the need for washers, these bolts adhere to international standards including DIN 6921 and EN 1665.