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Simpson Strong-Tie® Logo Simpson Strong-Tie® premium fastener products are US engineered and tested to ensure optimum quality, reliability and performance.

Simpson® SDWS timber screws, Oversize washer, 5"

Simpson® SDWS Timber hex screws

Simpson® SDWS Timber screws, Star drive oversize washer head

Ideal for structural wood to wood projects including deck ledgers and general purpose fastening. Can be used as an alternative to through bolting and lag screws. Star drive is a Torx® compatible drive, designed to minimize the risk of cam-out (stripping).

See also

Wood screw

Wood screws

Screws with a smooth shank and tapered point for use in wood.