GRK Fasteners RSS™ 5/16 x 3-1/8 Inch, Structural Screws, 100 PCS, Rust Resistant Climatek™ Coating, Heavy-Duty Framing & Decking Screws, Fast Bite Tip, Star Drive Recess, T-30 Bit Included, Gold

GRK 12221

•Heavy Duty Lag Screw Alternative: Eliminates pre-drilling in most woods with Zip-Tip technology. Installs 3x faster than traditional lag screws
•ESR-2442 Code Approved For Structural Applications: Engineered for professional-grade connections in heavy duty framing, multi-ply beams, and timber framing. Integrated washer head delivers maximum clamping force for zero-gap joints in LVL, LSL, and engineered lumber.
•Advanced Corrosion Protection: Rust resistant Climatek™ coating provides exceptional durability for outdoor use and in pressure-treated lumber applications
•W-cut Thread Design: Reduces installation torque by 40% for smoother, faster driving. CEE threads minimize splitting in dense hardwoods, engineered lumber, and laminated beams.
•Precision Engineering: Star/Torx drive recess with 6 points of contact prevents stripping and minimizes wobble between screws and bits.

GRK 12221

The GRK RSS Rugged Structural Wood Screw is a professional-grade fastener designed for heavy-duty framing, decking, and construction projects. These premium screws deliver superior performance in applications, including deck building, timber framing, laminated beams, pole barns. GRK’s Climatek™ coating, provides exceptional corrosion resistance, making these construction screws ideal for pressure-treated lumber, cedar, and all other wood applications. The patented Fast Bite Tip and Zip-Tip™ technology eliminates the need for pilot holes, while the W-Cut™ design ensures smooth, low-torque driving in all wood types. ICC-ES ESR-2442 approved for structural applications, these self-drilling screws are trusted by professional builders and DIYers alike. The star drive head with 6-points of contact prevents cam outs and head stripping, making these wood screws the choice for demanding construction and home improvement projects.