The GRK R4 Multi-Purpose Screws (305 Stainless Steel, Star Drive) are engineered for strength, precision, and long-term corrosion resistance in the toughest outdoor environments. Designed for use in wet or coastal areas, these stainless steel fasteners are ideal for decks, docks, boardwalks, pools, and spas. Made from 305 stainless steel, R4 Screws provide exceptional durability and protection against rust and staining, even in high-moisture conditions. The Star Drive recess ensures six points of contact for superior torque transfer and reduced stripping, while the self-countersinking head and W-Cut™ thread design allow smooth, fast installation in a variety of wood types—including cedar, redwood, and ipe.
Manufactured from 305 stainless steel for maximum corrosion protection
Ideal for decks, docks, pools, boardwalks, and other wet environments
Compatible with cedar, redwood, ipe, and most wood types
Star Drive recess eliminates stripping and increases driving efficiency
W-Cut™ thread design allows low-torque, fast installation
Self-countersinking head for a clean, professional finish
