The TIMCO Heavy Duty Timber Screws Hex Flange Head Exterior Silver – 8.0 x 150 includes 10 high-performance timber screws designed as an alternative to traditional coach screws. These heavy duty screws dramatically decrease installation time as they don’t require a pilot hole into most wood types, making them ideal for external applications or where extra strength is required. The screws feature a hex head countersunk with a fixed washer, patented silver corrosion resistant plating that withstands 1,000 hours salt spray test, and a 50° deep single thread to provide secure fixing with high pull-out resistance. The single slash point reduces torque and risk of timber splitting at low edge distance, while the helix design removes debris and helps improve clamping.