The TIMCO C2 Exterior Multi-Purpose Premium Countersunk Silver Woodscrews feature all the superior performance characteristics of the C2 screw system with an advanced organic plating that provides optimal corrosion resistance for the harshest external environments. These premium woodscrews offer exceptional 1,000 hours salt spray resistance through their multi-layer coating system consisting of an organic top coat barrier and zinc base layer. The silver finish perfectly matches commonly used ironmongery, while the patented twin cut technology ensures rapid pick-up and reduces timber splitting. With ribs under the head for improved countersinking and a dual angle thread design providing ultimate performance and exceptionally high pull-out resistance, these screws are ideal for demanding general external applications.