5/16X3-1/8 Rugged Structural Screw Stainless

500 per box RSS™ Rugged Structural Screws: Speedy lag bolt alternative with immense drawing power. Ideal for use anywhere you would use a traditional lag screw and more, but with no pre-drilling required. For use in all applications including pressure treated lumber. They are self tapping, which eliminates pre-drilling and they feature a washer head with cutting teeth, W-Cut™ for reducing torque, CEE Thread™ for no splitting and Pheinox™ 305 Stainless Steel. The recommended use of PHEINOX™ stainless steel fasteners are in tropical wood, cedar wood, pool, hot tub, sauna and seaside applications, as well as deck applications in areas with large daily temperature variances.Pheinox™ 305 Stainless Steel is the ultimate finish for superior all weather corrosion protection. Head Type: Round Washer Head Drive Type: T-30 Star Thread Type: W-Cut & CEE Thread Composition Pheinox™ 305 Stainless Steel Benefits: Recessed Star Drive: Zero Stripping with 6 Points of Contact CEE Thread: Enlarges