Simpson Strong-Tie, Strong-Drive® 4 in. x 0.275 in., SDWS™ Timber Screw, 316 Stainless Steel, 30 Count
Introducing the Strong-Drive SDWS Timber SS heavy-duty structural fastener in severe corrosion–resistant Type 316 stainless steel. Its heavy-duty 0.275"-diameter shank, SawTooth® point and flat washer head make the SDWS Timber SS the ideal choice for use in applications such as docks, wharves, piers, boardwalks and ledgers where strength and severe-corrosion resistance are critical.
Designed to provide an easy-to-install, high-strength alternative to through-bolting and traditional lag screws. The Strong-Drive SDWS Timber screw is ideal for the contractor and do-it-yourselfer alike. It 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.
- 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
- Length: 4 in.
- Type 316 stainless steel provides corrosion resistance even in severe conditions
- Quantity: 30
| Type | Exterior Wood Screws |
|---|---|
| Length | 4 in. |
| Diameter | 0.275 in. |
| Style | Washer Head |
| Drive Type | Star T-50 |
| Brand | Simpson Strong-Tie |
| Color Family | Silver |
| Finish | 316 Stainless Steel |
| Material | 316 Stainless Steel |
| Pack Size | 30 Count |
| Manufacturer Code | SDWS27400SS-R30 |
Application: Structural wood-to-wood and engineered-wood connections in coastal or severe corrosion environments. Typical applications include piers, boardwalks, wharves and ledgers.