Spax 4581820700905 1/4 x 3-1/2" T-Star Drive Washer Head HCR (Exterior) Powerlag Screw (50 Pieces per Box)

• The trend setting low profile built-on washer head design offers a contemporary and sleek finished installation. Excellent draw down strength without the need for a separate washer delivers superior clamping ability and a easier installation
• Check out our Threads!! our patented thread technology allows the 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
• High Corrosive resistant (HCR) coating makes these screws ideal for use in treated lumber and exterior applications
• Heat treated Grade 5 Durability. Subjecting the screw to heat treating gives greater strength and reduces breakage
• T-Star plus head provides superior bit engagement. Better bit engagement means quicker installation with less effort

Spa Power Lags s have a washer head with T-Star Drive and HCR-X (High Corrosion Resistant) exterior coating. Provides a new level of fastening efficiency and re to construction. Engineered specifically for demanding wood-to-wood structural applications, Power Lags feature patented thread serrations that elimite pre-drilling and dramatically increase installation speed - requiring up to 40% less driving torque to increase installation speed. Fastener length stamp on the head provides convenient identification without measuring and aids on-site inspections. HCR-X Coating offers superior X-terroir corrosion resistance when installed in treated lumber and is tested in coastal construction environments. All Spa Power Lags are building code listed and load rated, ICC-ES ESR-1782.