Simpson Strong-Tie SDWS27400SS-RP1 Strong-Drive SDWS TIMBER Screw, 0.275-in. x 4-in. T50, Type 316

• 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

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