Simpson Strong-Drive SDWS Timber Screws (50ct)

• 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 offer greater control when seating the head
• Large low-profile washer head provides maximum bearing area (0.75" head dia.)
• 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-RC)
• 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.