Simpson Strong-Tie® Strong-Drive® SDWH Timber-Hex Stainless-Steel Screw is built for demanding wood framing and timber projects. Made from Type 316 stainless steel, it delivers long-lasting corrosion resistance in coastal, wet, or harsh outdoor environments. The rugged hex-head design drives easily while the large washer head spreads load for a secure, dependable hold on big members.

Key Features

• Type 316 stainless steel - for maximum corrosion resistance in tough outdoor conditions.
• Large 0.650" washer head - distributes load and resists pull-through on heavy timber.
• SawTooth® point - starts fast, lowers driving torque, and typically removes the need for predrilling.
• Bold thread design - provides excellent holding power and tight, secure connections.
• 5/16" hex drive - size stamped on the head for quick identification and easy driving.