Ratings & Reviews for GRK RSS 5/16-in x 3-1/8-in Polymer Exterior Structural wood screws 45 -Per Box
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise these screws for exceptional holding strength, ease of installation, and reliability across woodworking and construction projects. Reviewers highlight their superior performance compared to traditional lag bolts, noting aggressive threads that hold like a champ with zero failures in critical applications like deck ledgers and playsets. The self-tapping design eliminates pilot holes and speeds assembly with impact drivers, while the large washer head and durable star drive prevent over-driving and stripping. Many consider them a worthwhile investment despite higher cost, valuing the time savings and dependable performance.
Customer review summary generated by AI, including incentivized reviews.Great
Would RecommendReliable strong screws
Verified Purchaser
First time using!
Would RecommendLove that it came with the bit to drive screw, can't never have too many. Screws easily droved into the 2x4 for my handrail built.
Verified Purchaser
Hi there, thanks for sharing your positive experience with our RSS Screws. We work hard to make sure our products are well designed. We’d love to hav... Read More
These are my go-to structural screws
Would RecommendI have been restoring and updating an old horse barn, and in the process try to reuse as much of the original wood as possible. This wood is gorgeous, but it's also hard as iron. I have burnt up countless drill bits. Nails are a non starter. I have even destroyed a power mitre saw trying to cut it. The most effective fastener I have used are these RSS screws. To say they are strong is an understatement. The Torx head gives you the best support in terms of driving power. I have never had one brea...
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Hi there, thanks for sharing your positive experience with our RSS Screws. We work hard to make sure our products are well designed. We’d love to hav... Read More
Great Choice
Grip and strength were excellent
Verified Purchaser
Hi there, thanks for sharing your positive experience with our RSS Screws. We work hard to make sure our products are well designed. We’d love to hav... Read More
Strong fastener and easy to drive.
Would RecommendSuper heavy duty wood fastener.
Verified Purchaser
Hi there, thanks for sharing your positive experience with our RSS Screws. We work hard to make sure our products are well designed. We’d love to hav... Read More
The 5/16 X 3 1/8 were just what I needed for the .
Would RecommendThey were just what I needed since they are slightly bigger than the ones I had. they fit much tighter than the ones that were in there. They worked really well.
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Hi there, thanks for sharing your positive experience with our RSS Screws. We work hard to make sure our products are well designed. We’d love to hav... Read More
Strong and well priced.
Would Not RecommendStrong and worked perfect for project.
Verified Purchaser
Aggressive threads with great holding strength
Would RecommendSturdy with great bite into material
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Floor joist
Would RecommendThese screws were used to scab floor joist back together after scetions had rotted away. They bit well and screwed in without issue creating a firm bond
Verified Purchaser
Excellent Timber Screws
Would RecommendThese screws are great. Easy to use and the right length to secure 2x lumber together or to heavier beams. I drilled most of the holes in the 2x lumber but some I didn't and these screws pulled tight either way without splitting.
Verified Purchaser
Hi there, thanks for sharing your positive experience with our RSS Screws. We work hard to make sure our products are well designed. We’d love to hav... Read More