Spax PowerLags 5/16 In. x 4 In. Washer Head Exterior Structure Screw (12 Ct.) Pack options:Pack of 1 Stainless steel for rust-resistant and

Stainless steel for rust-resistant and ACQ safe - safe to use with premium woods including cedar and redwood

metal and masonry roofs

EPDM (Ethylene Propylene Diene Monomer) rubber

bathtub twist and close strainer assembly

and very pliable

Spax PowerLags 5/16 In. x 4 In. Washer Head Exterior Structure Screw (12 Ct.) Pack options:Pack of 1 Stainless steel for rust-resistant andSpax PowerLags Screws have a washer head with T Star Drive and HCR (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.