The TIMCO Heavy Duty Timber Screws Hex Flange Head Exterior Silver – 8.0 x 100 are designed as an alternative to traditional coach screws, dramatically decreasing installation time as they don’t require a pilot hole into most wood types. These screws are ideal for external applications or where extra strength is required. They 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, while the helix removes debris and helps improve clamping.