Questions and Answers for GRK Fasteners #8 x 2-1/2 in. Star Drive Trim-Head White RT Composite Finish Screw (100-Pack)

A:  Hi there, thank you for your interest in our RT Composite screws. We need a few more details about your specific application as we want to ensure we are providing the best recommendation. Can you please reach our to our experts either by call or email? Please feel free to call us at (877) 489-2726 or email us at CS@itwbrands.com. There we will gather the necessary specs to recommend the product you will need.

A:  Hi there, our Climatek coating is AC257 code approved for use in treated lumber, and provides corrosion resistance. For more information on which product may be best for your application please feel free to call us at (877) 489-2726 or email us at CS@itwbrands.com.

A:  Hi, I'm Andrew Gibson. We recommend contacting a local, licensed engineer to determine the appropriate product and spacing for your application.

A:  Hi I'm Andrew from GRK. These RT Composite screws have been specially designed for composite materials, However, it is also able to be used in wood for fencing applications. If you are primarily interested in the trim head design, you can also refer to the GRK Fin/Trim screws. Both of these screws have our Climatek™ exterior rated coating.

A:  Hi, I'm Andrew from GRK. The RT Composite product was specially designed for composite material. However, it is also able to be used in wood for fine carpentry projects. GRK also offers a trim head design on the FIN/Trim product, which is specifically designed for wood.

A:  Hi Ray, I would not trust using these with metal studs or driving them through metal. They are designed to be used with composite wood, wood, and PVC trim. They are designed to be 'sunk' into wooden framing. You might want to check out the Home Depot line of "Teks" brand screws to see if they have something to fit your needs.