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Strong-Drive® SDWH TIMBER-HEX Screw

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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.

Key Features

  • SawTooth point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
  • Bold thread design provides superior holding power
  • Underhead nibs that offer greater control when seating the head
  • Large washer head provides maximum bearing area (0.64″ head dia.)
  • Size identification on all SDWH screw heads
  • 5/16″ hex drive (replacement driver bit — BITHEXR516-134)
  • U.S. Patent 9,523,383

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.


  • Structural wood-to-wood and engineered wood connections including ledgers

Product Includes

  • Retail and mini-bulk packs include one 5/16″ hex driver bit; bulk packs include two driver bits
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