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Type T-40 Bit required with deep 6-lobe recess to prevent cam-out
Low-profile heads allow hardware installation to be virtually flush
Head is stamped with Simpson Strong Tie Stamp and fastener length for easy identification
Bold thread design provides superior holding power and cInches fastened members together for consistent installation
Tan double barrier double coating for exterior applications, Imported
Description Product Description Simpson SDWS Exterior Double Barrier Structural Wood Screws are designed with a shorter thread length to fasten multi-ply members such as trusses, engineered lumber products and solid-sawn lumber. Large washer head provides maximum bearing area and deep 6-lobe recess reduces cam-out. Requires type T-40 bit. Optimal screw lengths provide maximum penetration while preventing the point from protruding out the back member. From the Manufacturer Simpson SDWS Exterior Double Barrier Structural Wood Screws are designed with a shorter thread length to fasten multi-ply members such as trusses, engineered lumber products and solid-sawn lumber. Large washer head provides maximum bearing area and deep 6-lobe recess reduces cam-out. Requires type T-40 bit. Optimal screw lengths provide maximum penetration while preventing the point from protruding out the back member.