High Strength Ground Screw Anchor Modern Earth Screw Corrosion Resistant Foundation The High Strength Ground Screw Anchor is a modern earth screw foundation engineered to replace concrete footings with a fast, clean and highly adjustable piling solution. A precision-welded helical blade drives into the ground with controlled torque, anchoring solar arrays, fences, carports, timber buildings and light steel structures without excavation or curing time. Manufactured from Q235