Achieve a secure, flush finish with high-performance SPAX-Decking 5x50 A2 Stainless Steel 304 screws. Built for coastal and harsh environments, these fasteners resist corrosion while keeping decking boards firmly in place. Designed for 90x19, 140x19, or 140x25 decking boards, they feature a cylindrical head that sits neatly with minimal board splitting. The ground serrations and T-STAR plus recess ensure steady turning and precise seating, even in challenging conditions. Key features Material: 304 A2 stainless steel for corrosion resistance Size: 5 mm diameter, 50 mm length Head type: Cylindrical for a clean, flush finish Drive: T-STAR plus recess, compatible with a T-25 bit Intended boards: Works with 90x19, 140x19, or 140x25 decking boards Tips for best results: pre-drill the boards and substructure, then drive straight in until the head sits flush to minimize movement and achieve an impeccable visual appearance. Shipping options available. In‑store pickup available — contact us for pickup location & hours.