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
