• Highly recommended for seaside applications and maximum corrosion resistance • Unique 4-corner thread-form with raised ridge technology greatly reduces driving torque • 6 lobe drive virtually eliminates driver bit cam-out • Self-countersinking nibs under he d insure flush installation • Penetrate hardest wood products with ease; often without pre-drilling • Threaded approximately 2/3 up shank to tightly draw deck board to joist • Made of solid 316 stainless steel for maximum corrosion resistance • Contractor"s Packs will fasten 500 square feet of decking (6 boards on 16 centers) • Deck Packs will fasten 100 square feet of decking (6 boards on 16 centers) • NOTE: DO NOT OVER-DRIVE. • Gauge x Lgth In=10 x 3