GRK Black RSS Structural Screws

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Black RSS Structural Screws GRK Black RSS Screws are perfect for deck framing or pergola installations when you want a better look. RSS Structural Screws are Heavy Duty lag screws designed for strong, tight connections. GRK Black RSS Screws: Black Coated Hardened Steel T30 Bit Included In Each Box 5/16" Screws - 3-1/8", 4", 5-1/8", Or 6" Lengths 25CT Handypaks, 100CT Pro-Paks, Or Bulk Boxes Various Quantity Approved For Treated Lumber Washer Head For Superior Clamping Force CEE Thread Enlarges Hole, Reducing Drive Torque W-Cut Thread Designed For Low Torque & Faster Drive Sharp Zip-Tip For Fast, Clean Starts Without Pre-Drilling GRK Limited Lifetime Warranty Show more