Tackle demanding framing projects with the GRK Fasteners R4 line—No. 12 and No. 14 x 6-3/8 in. Star Coated W-Cut Framing Screws. Built for speed, strength, and a flush finish, these 50-pack screws are ready for high-precision, long-lasting frame work in both indoor and outdoor environments.
Why these screws excel in framing tasks
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Self-drilling design: Drive directly into common framing lumber and engineered wood without pre-drilling in most applications, saving time on every project.
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W-Cut thread: Optimized for rapid thread engagement with reduced resistance, delivering quicker starts and steadier driving—even through tougher timbers.
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Star drive: Superior torque transfer minimizes cam-out and reduces bit wear, so you get consistent seating and fewer stripped screws.
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Countersink head: Flush, clean finish that won’t interfere with cladding, sheathing, or finish materials—ideal for carpentry where appearance matters.
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Coated steel: Corrosion-resistant finish designed to stand up to outdoor exposure while maintaining strength in indoor framing.
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Dual callout sizes: Availability of No. 12 and No. 14 diameters in one package gives you versatile options for different load requirements and member thickness.
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Long reach: At 6-3/8 in., these screws are well-suited for through-assembly into multiple framing members, helping you secure substantial connections with fewer fasteners.
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Bulk practicality: 50-count package provides ready-to-use supply for ongoing projects, reducing trips to the store and keeping timelines intact.
Ideal use cases
These framing screws are crafted for heavy-duty wood framing tasks such as exterior wall assemblies, subfloor connections, and structural framing where long, robust fasteners are needed. Their corrosion-resistant coating makes them suitable for outdoor decks, pergolas, and other exterior builds, while their flush countersink head keeps interior work neat and precise. If you’re a professional contractor or a serious DIYer working with standard framing lumber and engineered wood, this 50-pack gives you reliable performance for multiple assemblies in a single kit.
Pro tips for best results
- Use a star-drive bit with an impact driver or drill to maximize torque transfer and minimize cam-out.
- Leverage the self-drilling feature for quick starts, but consider a light pilot if you encounter particularly dense hardwoods.
- Keep the screw perpendicular to the work surface to ensure a flush countersink and even seating along the full length of the screw.
- For outdoor applications, ensure the substrate is dry and free of debris to achieve the best bite and seating depth.
Specifications at a glance
- Brand: GRK Fasteners
- Line: R4
- Drive: Star
- Head: Countersink
- Thread: W-Cut
- Finish: Coated
- Material: Steel
- Sizes: No. 12 and No. 14 (callout)
- Length: 6-3/8 in.
- Self-Drilling: Yes
- Indoor/Outdoor: Indoor and Outdoor
- Count: 50 per package
- Packaging: Bagged
