Samac PST540PP 5x40mm Performance PLUS Screw TUB (500) PST540PP Pozi drive for secure engagement and efficient installation. Reinforced double countersunk head reduces head breakage and assists countersinking. Self-countersinking ribs deliver improved countersinking and a flush finish. Waxed zinc and yellow passivated finish provides corrosion resistance and significantly reduces torque. Milling tread helps reduce torque and prevents splitting. Serrated thread cuts into wood to reduce splitting and installation effort. Type 17 cut point reduces splitting and the need for pre-drilling. Supplied in a tub of 500 screws. Free Pozi bit included in each box. Samac Performance PLUS wood screws are designed to deliver reliable performance, faster installation, and a cleaner finish across a wide range of timber applications. Engineered with advanced head, thread, and cutting features, these screws help reduce splitting, minimise torque, and improve countersinking for professional results. The durable finish offers enhanced corrosion resistance, making them a dependable choice for demanding trade and construction environments.