14225 SCREW RSS MINI 5/16X4IN 25 Pack

Overview The GRK Fasteners RSS Mini Structural Screw (14225) is designed for structural fastening applications including carrying beams, ledger boards, stair rails, deck posts, playground equipment, and other professional-grade installations requiring a reliable interior or exterior fastener. Specification Detail MPN 14225 Brand GRK Fasteners Diameter 5/16 in. Length 4 in. Package Quantity 25 screws Material Specially hardened steel Finish / Coating Climacoat Thread Type W-Cut Head Type Washer Head Drive Style Star (Torx-style) Self Tapping Yes Self Drilling Yes Driver Bit Included Yes Indoor / Outdoor Use Indoor and Outdoor Packaging Type Clamshell Package Weight 1.15 lb UPC 772691142252 Technical Features Specially hardened steel construction — provides the structural strength required for load-bearing connections in beams, posts, and ledger boards. W-Cut thread design — reduces driving torque and material friction, allowing faster penetration with less effort and reduced risk of wood splitting. Self-drilling and self-tapping tip (Zip Tip) — eliminates the need for pre-drilling pilot holes, speeding up installation on the job site. Climacoat finish — provides corrosion resistance for both interior and exterior applications, including exposed outdoor environments such as decks and playground equipment. Washer head design — distributes clamping load over a wider surface area, improving pull-through resistance in structural connections. Star drive style — reduces cam-out compared to Phillips-style drives, maintaining positive bit engagement under high torque. Driver bit included — package is job-site ready without requiring a separate bit purchase. Clamshell packaging, 25-pack — convenient quantity for targeted structural projects with clear product visibility at point of sale or storage. Applications Carrying beams and structural lumber connections Ledger board attachment to framing Deck post and rail fastening Stair rail installation Playground equipment assembly General professional structural fastening — interior and exterior