Screw Products, Inc. SSTX-10400 Heavy Duty Silver Star 305 Stainless Steel Srar Drive Screws Silver Star 305 Stainless Steel Star Drive Wood Screws for Coastal Environments, Corrosive Applications and High Moisture Areas Where Extra Resistance is Needed Star Drive offers twice the torque over Phillips or square drive screws True Flat Head with Self-countersinking Nibs and Drag Reducing Knurled Shoulder Type 17 Notched Extra Sharp Point reduces the need for pre-drilling Deep, Wide, Sharp Threads and provides maximum holding power