SPAX 3581820801520 5/16 x 6" T-Star Washer Head HCR High Corrosion Resistant Exterior PowerLag Screw 250 Pieces per Pail

Check out our Threads: Our patented thread technology allows the washer head screw to be driven faster, is easier to install, and reduces splitting in wood. Let SPAX take some of the hassle out of your next project. Heat Treated Grade 5 Durability: Stay Stronger for Longer! Subjecting the PowerLag screw to heat treating gives greater strength and reduces breakage. Tested under the toughest scenarios to give you confidence in every connection. Options! And more Options: Offers the largest selection of code recognized structural wood to wood engineered fasteners in the industry. Bit is included in the pail. ICC-ES building code recognized for use in structural wood to wood applications. ICC-ES Report ESR-1783. Manufactured to imperial size standards leading pull-through and withdrawal values. Recommended for use in treated lumber and exterior applications T-star Screw: T-Star drive accepts and is compatible with all industry standard bits. Our 6-Lobe design corrosion resistant screw provides superior bit engagement. Better bit engagement means quicker installation with less effort.