*Listed price shown includes 20% discount on all GRK products.

View the RSS™ Rugged Structural Screw promotional video below

Product Overview

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 80mm 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 round head with built-in shield (washer type head) has no 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.

The #30 Star Drive will deliver approximately 650 lbf of energy, eliminating the need to drill a pilot hole.

The RSS™ screw is the only lag screw replacement of its kind.

Patented W-Cut™ Thread Design and ZipTip™

The W-Cut™ is a patented thread design which acts like a saw blade cutting through any fibrous materials with ease. This unique design reduces the amount of torque required to install the screw, and maintains a high pull out strength. By cutting through, rather than pressing fibers aside, the W-Cut™ also reduces material splitting.

The W-Cut™ design is available on all GRK screws, 30mm and longer.

GRK's ZipTip™ is designed for fast starts in any fibrous materials.