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GRK Fasteners R4™ Multi-Purpose 305 Stainless Steel Screw

GRK Fasteners

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Corrosion resistance for high moisture environments

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. Recommended for use with cedar, redwood and other naturally protected wood species that have a higher acid content. R4 305 stainless steel screws are recommended for applications located more than 1 mile from the coast.

Zip-Tip™: Eliminates pre-drilling
W-Cut™: Low torque, faster drive
CEE Thread™: Enlarges hole to reduce splitting
Star Drive Recess: Zero stripping, with 6 points of contact.

*Not available in all sizes. Reference tables below.

Features

Fast Bite Tip

Provides a fast start

GRK’s Star Drive Recess

Provides 6 points of contact for zero stripping

W-Cut™

Low torque and smoother drive reduce splitting

Additional Features

305 Stainless steel for superior strength and corrosion resistance
CEE Thread™ Enlarges hole to reduce splitting
Underhead cutting teeth for flush seating