GRK Fasteners RSS structural screws are high-performance fasteners engineered from specially hardened steel for exceptional tensile, torque, and shear strength. These 5/16-inch by 4-inch screws with star drive heads are designed for demanding construction applications where reliable, strong connections are essential, including deck construction, ledger board installation, and structural framing projects.
The RSS screw delivers an efficient alternative to traditional lag screws. Sharp threads and points bite instantly into materials, including hardwood, while the smaller shank reduces splitting risk. At 4 inches in length, these screws feature CEE threads that enlarge the screw hole for the non-threaded portion, allowing wood to settle easily and increasing drawing strength. This thread design also reduces friction on the shank, lowering driving torque and further decreasing the likelihood of wood splitting during installation.
Features and Benefits
- Specially Hardened Steel Construction: High tensile, torque, and shear strength for demanding structural applications.
- Fast-Acting Thread Design: Sharp threads and points provide instant bite into hardwood and other materials, often eliminating the need for pilot holes.
- CEE Thread Technology: Enlarges the screw hole for the non-threaded portion, reducing friction and lowering driving torque while enhancing drawing strength.
- Washer Head with Built-In Shield: Round head design eliminates sharp edges found on conventional lag screws, providing a safer fastening solution.
- Centered Installation: Added shoulder underneath the washer centers the screw in pre-drilled hardware like hinges and connector plates.
Specifications
- Brand: GRK Fasteners
- Model: RSS 12225
- Thread Diameter: 5/16 inch
- Length: 4 inches
- Head Type: Washer head
- Drive Type: Star drive
- Material: Steel (specially hardened)
- Pack Size: 100 screws
