GRK Fasteners 5/16 in. x 2-1/2 in. RSS Structural Screw

The GRK Fasteners 5/16 in. x 2-1/2 in. RSS Structural Screw is engineered from specially hardened steel to deliver outstanding tensile, torque, and shear strength. Designed as an efficient alternative to traditional lag screws, this fastener features sharp threads and points that bite immediately into wood and reduce the splitting effect during installation. Equipped with a built-in washer head and an integrated shoulder, this screw provides immense clamping force while seating flush without sharp edges. The proprietary Climatek coating offers advanced corrosion resistance, making it fully approved for code-compliant use in pressure-treated lumber across both interior and exterior framing projects.