Simpson .28 x 8" SDWS Flat Washer Head Timber SS Screw

Simpson Strong-Tie SDWS Stainless Steel Timber Screws

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Your Price: $9.62

Part Number: 15867

Availability: In Stock.

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30+	$9.16

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Description

Built to perform in the toughest environments, Simpson Strong-Tie SDWS Stainless Steel Timber Screws deliver unmatched strength, durability, and corrosion resistance for demanding outdoor structural applications. Made from Type 316 stainless steel, these screws are engineered to withstand moisture, salt exposure, and chemically treated wood—making them ideal for coastal construction, decks, docks, boardwalks, landscape timbers, and other heavy-duty projects.

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

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Simpson Strong-Tie SDWS Stainless Steel Timber Screws

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