GR's line-up of multi-purpose and structural fasteners include:

• GRK’s R4™ Multi-Purpose Screw is a versatile, code-approved fastener for hundreds of applications.
• GRK’s RSS™ Rugged Structural Screw is a structural fastener designed for ease of installation and the strongest of connections. RSS fasteners drive into most woods without the need for pre-drilling.
• RSS Black Structural Screws are designed for outdoor and decking applications.
• GRK’s R4™ Multi-Purpose 305 stainless steel screws are designed for applications that require superior corrosion resistance in exterior environments with high moisture content such as docks, boardwalks, and piers on lakes.
• 316 stainless steels screws are recommended for applications where extreme corrosion resistance is necessary, such as environments with high exposure to chlorides- such as de-icing salts- and applications within 1 mile of the coast.
• GRK’s RSS 305 stainless steel screws are designed for applications that require superior corrosion resistance in outdoor environments with high moisture content including docks, boardwalks, and piers on lakes.
• GRK’s RSS™ Joist and Truss Screw is a structural fastener designed for ease of installation and the strongest of connections for heavy duty roof and floor construction.