Simpson Strong-Tie SDWS SDWS221200-RP1 Timber Screw, 12 in L, Serrated Thread, Low-Profile Head, 6-Lobe Drive Black (Pack of 40)

The Strong-Drive® SDWS timber (interior-grade) screw formerly, the SDWS log screw is a structural wood screw available in a variety of lengths and is designed for cross-laminated timber assemblies, mass timber construction, log-home construction, ledgers and general interior applications. These 0.195 and 0.22 in Dia structural fasteners require less torque to install than comparable fasteners and the large diameter washer head pulls members down easily, eliminating the need to use extra washers. It is code listed under IAPM-UES ER-192 and meets 2015 and 2018 IRC® and IBC® code requirements for several common wood framing applications. Online purchases are in packages of 40.