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 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

• 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.
• Coastal Grade: Rust resistant stainless steel provides extra durability for high moisture environments such as pool decking, docks, boardwalks, etc.
• 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.

Included with (100) GRK Fasteners 12221 5/16" x 3-1/8" T-30 RSS Rugged Structural Screws. The RSS Fasteners are Ideal for Carrying Beam, Playground Equipment, Ledger Board, Deck Posts, and Stair Rails. AC257 Treated Lumber Approved (IBC/IRC Code Compliant ESR #2442). Made with a Climak All-Weather Cloating, No Pre-Drilling, Low Torque, and Recessed Star Drive.