With the Spax 1197000500803 chipboard screws, you create strong and durable timber joints for outdoor projects and humid environments. Made from A2 stainless steel, they provide dependable protection against rust and weathering for decking, pergolas, fences, and facade cladding. The full thread design across the 5 x 80 mm dimensions absorbs high tensile and compressive forces with ease. Driving is smooth and precise thanks to the t-star plus T20 drive, which eliminates bit slippage. Additionally, the countersunk multi head pulls neatly flush into the wood surface without splitting the material, giving you a clean and professional finish.