Simpson SDWS Structural Exterior Timber Screws

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Key Features Bold thread design provides superior holding power SawTooth® point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most app lications Underhead nibs allow for head to drive flush to surface with reduced splintering Large washer head provides a large bearing area Size identification on all SDWS screw heads 6-lobe T40 drive provides positive engagement that makes the screw easy to drive and improves bit life (replacement driver bit — BIT40T-134-R2) Double-barrier coating provides corrosion resistance equivalent to hot-dip galvanization, making it suitable for certain exterior and preservative-treated wood applications, as described in the evaluation report Applications Structural wood-to-wood/engineered including ledgers; mass timber connections including CLT wall-to-wall, floor-to-floor, surface splines and lap joints Show more