Vis m8x20 8.8 De Dietrich 7754841

The screw m8x20 8.8 is a metric fastener with a diameter of 8 mm and a length of 20 mm, made from high-strength steel with a property class of 8.8. It is commonly used in boiler and burner assemblies to secure components such as brackets, covers, or mounting plates. This screw provides reliable clamping force and resistance to loosening under vibration. When replacing worn or missing fasteners, choosing the correct grade ensures safety and longevity of the equipment. It is a small but essential part for heating system maintenance and repair.