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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.

Highlights:

• High strength alternative to through bolting & traditional lag screws.
• Bold thread design for superior holding power. 
• 4Cut tip for fast starts eliminates pre-drilling.
• Large flat washer head (T40 recess) for easier setting.
• Sets flat in work surface.
• Clamshell with bit.
• Length: 6".
• Thread size: 0.22.
• Quantity: 50.