Simpson Strong-Tie 5/16-in x 3-in Galvanized/Coated Hex Washer Interior/Exterior Wood Screws (50-Count)

Ideal for structural and general-purpose fastening applications where a hex-head drive is preferred. The Strong-Drive SDWH Timber-Hex screw is ideal for the contractor and do-it-yourselfer alike. It is code listed under IAPMO-UES ER-192 and meets 2015 and 2018 IRC® and IBC® code requirements for several common wood framing applications.