Introducing the Strong-Drive SDWS Timber SS heavy-duty structural fastener in severe corrosion–resistant Type 316 stainless steel. Its heavy-duty 0.276"-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. Key Features Fast installation — no predrilling, no counterboring, no heavy-duty equipment needed Greater withdrawal resistance than spikes Patented SawTooth point for fast starts and less driving torque — without predrilling Heavy-duty 0.276"-diameter shank provides strength Large 0.650"-diameter flat washer head with nibs provides load-bearing area and seats flush with surface Deep T50, 6-lobe recess for secure driving Type 316 stainless steel provides corrosion resistance even in severe conditions Mid-shaft knurl aids in torque reduction Available in 3", 4", 5", 6", 8", 10" and 12" lengths