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. Strong-Drive® SDWH TIMBER-HEX Screw — 0.195 in. x 4 in. 5/16 Hex, DB Coating (50-Qty) (Pack of 360).