Spax 3571821201520 1/2 x 6" Hex Drive Washer Head HCR Exterior PowerLag Screw 100 Pieces per Pail

Spax Power Lags Screws have a hex head with integrated washer and HCR-X High Corrosion Resistant exterior coating. Provides a new level of fastening efficiency and reliability to construction. Engineered specifically for demanding wood-to-wood structural applications, Power Lags feature patented thread serrations that eliminate 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 Spax Power Lags are building code listed and load rated, ICC-ES ESR-1782.