RSS™ Rugged Structural Screw

Speedy Lag Bolt Alternative with Immense Drawing Power


 Recessed Star Drive: Zero stripping, with 6 points of contact

 Cee Thread: Enlarges hole to reduce splitting

 W-Cut™: Low torque, smoother drive

 Zip-Tip™: No pre-drilling, faster penetration

 Washer Head: for immense holding power

 Climatek™ Coated: AC257 approved for use in treated lumber


Some Sizes Available in PHEINOX™ 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 likelihood of splitting the wood and the friction on the screw shank which can result in lowering the driving torque.

The rounded head (washer type head) does not have sharp edges such as on 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. Short lengths of the RSS™ may also be used to install wire diamond mesh for stucco buildings.

Mobile Version | Standard Version