GRK RSS 5/16 In. x 4 In. Black Star Drive Washer Head Structure Screw

GRK RSS Black Structural Screw is a structural fastener designed for ease of installation and the strongest of connections while providing a bold finish. With proprietary features like the Zip-Tip, and W-Cut thread, RSS fasteners drive into most woods without the need for pre-drilling. The specially engineered design results in a low-effort installation, especially compared to conventional lag screws. RSS Rugged Structural Screws have a Climatek Coating for installation in both interior and exterior conditions where exposure to moisture is intermittent and is code-approved for use in treated lumber.

• Black coating matches decorative hardware for a cohesive looking deck build
• Fast-biting Zip-Tip eliminates pre-drilling and provides a fast start making it easy to get the strongest of connections
• Star drive recess has 6 points of contact, eliminating stripping
• Unique thread design draws two substrates together while its washer head allows zero gap joints
• Designed for outdoor and decking applications
• W-Cut: Low torque, faster drive
• Speedy lag bolt alternative with immense drawing power
• Climatek coating is AC257 Code approved for use in treated lumber
• Limited lifetime warranty