SPAX 1/4" x 4-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant;

Spax PowerLags Screws have a washer head with T-Star Drive 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, PowerLags 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-terior corrosion resistance when installed in treated lumber and is tested in coastal construction environments. All Spax PowerLags are building code listed and load rated, ICC-ES ESR-1782.