Designed to combine fast and easy use with improved drive, the Performance Plus high performance wood screw is the latest innovation from fixings specialists Samac.  The new Samac Performance Plus Wood Screw is packed with engineered features from head to point, making it the ideal screw to use on site. The Performance Plus Wood Screw features a reinforced pozi drive head and includes 6 self-countersinking ribs on the underside which ensures a consistently neat, flush finish. Features and Benefits Pozi, Reinforced Double Countersunk Head: Reduces head breakage and assists countersinking. Self-Countersinking Ribs: For improved countersinking and a flush finish. Waxed Zinc and Yellow Passivated Finish:  Corrosion resistant and significantly reduces torque. Milling Tread: Reduces torque, prevents splitting and torque. Serrated Thread: Cuts into wood reducing splitting and torque.