RSS Rugged Structural Screw 5/16″ x 5-1/8″

Recessed Star Drive: Zero stripping, with 6 points of contact
Cee Thread: for a clean finished look
W-Cut™: Low torque, smoother drive
ZIP-TIP™: No pre-drilling faster penetration
Washer Head: for immense holding power
Cutting Pockets: provide a clean hole and reduces splitting, and bore with precision
ESR-3201 Approved for structural application
Case Hardened Steel: for high tensile, torque and shear strength
Climatek™ Coated: AC257 approved for use in treated lumber
For interior/exterior use in: carrying beams, ledger boards, stair rails, deck posts, playground equipment and other professional applications
Some Sizes Available in PHEINOX™ 305 Grade Stainless Steel

GRK’s RSS™ Rugged Structural Screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks.

RSS™ screws which are 3-1/8″ and longer have a six threaded CEE thread that enlarges 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 the friction on the screw shank which can result in lowering the driving torque and the likelihood of splitting the wood. This is why the RSS screw is an efficient lag screw alternative.

Our 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.

RSS™ JTS – Used for joists and trusses