Strong-Drive SDWH Timber-Hex screws are designed for structural and general-purpose fastening applications where a hex head drive is preferred. These screws are ideal for the contractor and do-it-yourselfer alike. The SDWH Timber-Hex is code listed in IAPMO UES ER-192 and meets 2018 and 2021 IRC and IBC code requirements for most common wood framing applications.Bold thread design that provides excellent holding powerSawTooth point ensures fast starts, reduces installation torque and eliminates the need for pre-drilling in most applicationsUnder-head nibs that offer greater control when seating the headLarge washer head provides maximum bearing area (0.65 in head Dia)Size identification on all SDWH screw headsDouble-barrier coating provides a level of corrosion resistance that is equivalent to hot-dip galvanization (ASTM A153, Class D) in most non-marine environments