GRK Fasteners 12223 RSS Star Round Head Construction Screws - No. 20 x 3-1/2 in. L, 100/Pack

GRK's RSS screw is made of specially hardened steel to provide high tensile, torque, and shear strength. The sharp threads and points bite instantly into material, including hardwood, reducing the splitting effect due to smaller shanks. RSS screws 3-1/8 inch and longer have CEE Threads which enlarge the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily and increasing the screw's drawing strength. The CEE Thread also reduces friction on the screw shank, which can result in lowering the driving torque and the likelihood of splitting the wood, making the RSS screw an efficient lag screw alternative. The round head with built-in shield (washer type head) has no sharp edges like conventional lag screws. The added shoulder (nominal diameter) underneath the washer has the ability to center the RSS screw in pre-drilled hardware like hinges and connector plates.

• Zip-tip eliminates predrilling and one step installation
• Unique thread design and washer style head draws two substrates together while washer head allows zero gap joints
• W-cut low installation torque allows for fast driving and ease of install
• CEE thread enlarges hole to reduce splitting, thus eliminating rework
• ESR-2442 approved for structural applications