Product Description
The Simpson Strong-Drive SDWS TIMBER Stainless Steel Screw (SDWS271200SS-R30) is a heavy-duty structural fastener engineered by Simpson Strong-Tie as a high-strength, easy-to-install alternative to through-bolting and traditional lag screws. Constructed from Type 316 stainless steel, this 0.275-in. diameter x 12-in. screw delivers exceptional corrosion resistance even in severe environments - making it the ideal choice for structural wood-to-wood connections in coastal and high-moisture applications such as docks, wharves, piers, boardwalks, and ledgers. Code listed under IAPMO UES ER-192, it meets 2018 and 2021 IRC and IBC code requirements for several common wood framing and engineered-wood applications.
Key Features
- Fast installation - no predrilling, no counterboring, no heavy-duty equipment needed
- Greater withdrawal resistance vs. spikes
- SawTooth point for fast starts and less driving torque - without predrilling
- Heavy-duty 0.275-in. diameter shank provides strength and durability
- Large 0.650-in. diameter, flat washer head with nibs provides load-bearing area and seats flush with surface
- Deep T50, 6-lobe recess for fewer cam-outs
- Mid-shaft knurl aids in torque reduction
- Type 316 stainless steel provides corrosion resistance even in severe conditions
Specifications
- MPN: SDWS271200SS-R30
- Brand: Simpson Strong-Tie
- Material: Type 316 Stainless Steel
- Finish: Type 316 Stainless Steel
- Length: 12 in.
- Shank Diameter: 0.275 in.
- Head Type: Washer Head
- Head Diameter: 0.650 in.
- Drive Type: T50 6-Lobe
- Thread Length: 3 in.
- TPI: 5
- Point Type: SawTooth Point
- Code Listing: IAPMO UES ER-192; meets 2018 and 2021 IRC and IBC code requirements
Approved Applications
- Fastening Wood-to-Wood - structural wood-to-wood and engineered-wood connections in coastal or severe corrosion environments, including piers, boardwalks, wharves, docks, and ledgers
What's Included
Each pack contains (30) TIMBER Stainless Steel Screws, one 6-lobe, T-50 driver bit.
Frequently Asked Questions
- Does this screw require predrilling before installation?
- No. The SawTooth point is specifically designed for fast starts and reduced driving torque, allowing for installation without predrilling, counterboring, or heavy-duty equipment.
- Why is Type 316 stainless steel used for this screw?
- Type 316 stainless steel provides corrosion resistance even in severe conditions, making these screws well suited for demanding environments such as coastal installations, docks, wharves, piers, boardwalks, and ledgers where exposure to moisture and corrosive elements is a concern.
- What drive tool is required to install this screw?
- This screw uses a deep T50, 6-lobe recess drive. A T-50 driver bit is included with the purchase to help reduce cam-outs during installation.
- Is this screw compliant with current building codes?
- Yes. The Strong-Drive SDWS TIMBER Screw is code listed under IAPMO UES ER-192 and meets 2018 and 2021 IRC and IBC code requirements for several common wood framing and engineered-wood applications.
Note: Product dimensions and/or thread length may differ from picture. Please see the item specifications above for exact measurements.
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