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#9 x 3-1/8 in. Star Drive Torx Bugle Head R4 Multi-Purpose Wood Screw (240-Pack)
- GRK R4 fasteners for furniture building, fencing, and decking
- GRK R4 multi-purpose screw for wood-to-wood fastening and framing
- GRK R4 multi-purpose fasteners for interior and exterior use
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About This Product
GRK Fasteners' R4 Multi-Purpose Framing and Decking screw allows you to frame with ease and confidence. Typical applications include multi-purpose general framing, remodeling, decking top boards and structural framing applications. The W-Cut reduces installation torque which allows for fast driving and ease of install. The star drive eliminates stripping for improved productivity. The CEE Thread enlarges hole to reduce splitting, thus eliminating rework. Our Climatek coated screws provide corrosion resistance in pressure treated wood with corrosive ground contact.
Highlights
- For use in wood, particle-board, cement fiberboard, plastic, sheet metal
- Star drive eliminates stripping for improved productivity
- Zip-tip point eliminates the need to predrilled and provides easy starts into wood
- CEE thread enlarges hole to reduce splitting, thus eliminating rework
- W-cut thread design acts as a saw blade providing clean cuts through all wood and fibrous materials
- Zip-tip allows for no-pre-drilling and 1-step application
- Both zip-tip and w-cut thread design help eliminate splitting of material
- Cutting teeth cuts wood fiber and provides flush seating
- CEE thread reduces torque and friction during screw-in action
- Common project applications: remodeling, fencing, storage, cabinets, framing
- ESR-3201 approved for structural applications
- Cutting pockets underneath head allow screw head to countersink flush with material
- Ground contact lumber approved for worry free use in pressure treated lumber
- Climate coating resists corrosion
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Product Information
Specifications
Dimensions
Screw Length | 3-1/8 in |
|---|---|
Size | #9 |
Details
Drive Style | Torx |
|---|---|
Fastener Base Material | Exterior Wood |
Fastener Color | Brass |
Fastener Material | Carbon Steel |
Fastener Plating | Polymeric Zinc |
Fastener Type | Wood Screw |
Features | ACQ Rated, Self Tapping |
Head Style | Bugle Head |
Interior/Exterior | Exterior, Interior |
Measurement System | Inches |
Package Quantity | 240 |
Product Weight (lb.) | 3.12 lb |
Returnable | 90-Day |
Thread Style | W-Cut Thread |
Warranty / Certifications
Manufacturer Warranty | No |
|---|
Questions & Answers
Do these have the shear strength to be used to attach a plywood shear wall?
Hi there - thank you for contacting us. These screws are suitable for attaching plywood shear walls due to its structural approval (ESR-3201) and design for high-strength applications. These screws are specifically engineered for superior performance in framing and structural applications. Please feel free to call us at (800)222-6990 or email us at grk@itwbrands.com, if you have any questions
How do they work in mdf?
Hi there - thank you for reaching out to us. GRK screws can be used in MDF. There are evaluation reports on the website that outline their shear and withdrawal depending on the specific gravity of the material. For exterior use, it's important to ensure that the screws are suitable for outdoor applications, as MDF is not typically recommended for exterior use due to moisture sensitivity. Please feel free to call us at (800)222-6990 or email us at grk@itwbrands.com, if you have any questions.
Are they good for exterior.
Can I use these on the roof plywood?
Hi there - thank you for contacting us. It will all depend on the you location. Please feel free to call us at (800)222-6990 or email us at grk@itwbrands.com, to further discuss your application.
would these screws self drill into aluminum tubing used as framing on the interior of a camper wall?
Thank you for reaching out to us. While GRK screws can penetrate light gauge steel they are not code approved for use in such situations. GRK screws are not suitable for metal stud joining in load bearing and/or structural applications.
Are these recommended to screw down 3/4 inch subfloor into floor joists
Yes, 2" version is perfect. It's the only screw i'll use for advantech subflooring.
are these good to use to replace loose "gutter spikes" to better secure my gutters to the house?
Thank you for contacting us. Climatek coating over the zinc plating provides some separation between the dissimilar metals, and interaction between zinc and aluminum is very small unless it is an extremely corrosive environment. This is an area that will see constant moisture, and that has to be considered.
Are these exterior or interior screws?
Hi there - thank you for contacting us. Yes, GRK R4 multi-purpose screws are designed for both indoor and outdoor use. They feature a Climatek coating that provides corrosion resistance and is approved for use in treated lumber. Please feel free to call us at (800)222-6990 or email us at grk@itwbrands.com, if you have more questions.
Can be use for both interior and exterior.
What size star bit is needed for these screws
If you look at the picture of the container, the upper left, it says "includes T-25".
Thank you for contacting us, Daniel. The red T-15 bit is required and included in the box. If spares are needed, these are available on blister cards in 2" and 3" lengths. Hope this helps!
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Customer Reviews
4.8 out of 5
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Compare Key Features
Product Snapshot | |||
|---|---|---|---|
Great for homeowners looking for corrosion-resistant screws, making framing, remodeling, and decking projects easier and more efficient. | Great for homeowners looking for corrosion-resistant screws, making framing, remodeling, and decking projects easier and more efficient. | Great for homeowners looking for corrosion-resistant screws, making framing, remodeling, and decking projects easier and more efficient. | Great for homeowners looking for corrosion-resistant screws, making framing, remodeling, and decking projects easier and more efficient. |
Length | |||
3-1/8 in | 2 in. | 4 in | 2-1/2 in. |
Diameter | |||
#9 | #9 | #10 | #9 |
Thread Type | |||
W-Cut Thread | W-Cut Thread | W-Cut Thread | W-Cut Thread |
Material | |||
Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel |
Head Type | |||
Bugle Head | Bugle Head | Bugle Head | Bugle Head |
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