The TIMCO Heavy Duty Timber Screws Hex Flange Head Exterior Silver – 10 x 200 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 heavy duty screws are ideal for external applications or where extra strength is required, featuring a hex head countersunk with a fixed washer and a 50° deep single thread to provide secure fixing with high pull-out resistance. Coated with a patented multi-layer corrosion resistant silver plating to withstand 1,000 hours salt spray test, they include a single slash point to reduce torque and risk of timber splitting at low edge distance. The helix design removes debris and helps improve clamping performance.