Ratings & Reviews for GRK Fasteners R4 #12 x 6-3/8-in Polymer Exterior Multi-material screws 50 -Per Box
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise these screws for exceptional holding power, self-drilling capability, and reliability across demanding wood projects. Most highlight superior grip that pulls boards tightly together without pre-drilling, even on warped or treated lumber. The T25 star bit design earns consistent praise for resisting stripping and delivering clean, flush finishes. Users rely on them for heavy-duty applications like decking, fencing, and timber construction, calling them "life savers" for securing 4x4 posts and tree swings. A few mention higher pricing, but nearly all consider them the best choice for woodworking.
Customer review summary generated by AI, including incentivized reviews.Just what the Doc ordered.
I need these screw to secure blocking while repairing my front door frame. They worked great.
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Great
Would RecommendGreat penetration, didn't split my wood, drove all the way down surprisingly easy, sat all the way in the wood and held securely when I what throwing it around great clamping force 10 out of 10
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Worked well
Would RecommendThey worked well. I accidently broke the package in the store but the screws were solid and did their job
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi there, thanks for sharing your positive experience with our R4 Screws. We work hard to make sure our products are well designed. We’d love to have... Read More
Worked well
Would RecommendThey worked well and were the same size driver as the smaller ones so you don’t have to keep changing bits.
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi there, thanks for sharing your positive experience with our R4 Screws. We work hard to make sure our products are well designed. We’d love to have... Read More
Great product
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi there, thanks for sharing your positive experience with our R4 Screws. We work hard to make sure our products are well designed. We’d love to have... Read More
Extra long, work well.
Would RecommendThese work great when you need extra long screws on your project
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi there, thanks for sharing your positive experience with our R4 Screws. We work hard to make sure our products are well designed. We’d love to have... Read More
screws
worked well on my deck project
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi there, thanks for sharing your positive experience with our R4 Screws. We work hard to make sure our products are well designed. We’d love to have... Read More
They are there to stay
Would RecommendPerfect for secures larger boards and I even used them to secure a tree swing
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi there, thanks for sharing your positive experience with our R4 Screws. We work hard to make sure our products are well designed. We’d love to have... Read More
Does the job
Would RecommendEase of use
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi there, thanks for sharing your positive experience with our R4 Screws. We work hard to make sure our products are well designed. We’d love to have... Read More
Heavy duty, product.
Would RecommendI love this product for any wood or fence project,.
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi there- thank you for reaching out. Your input and support are greatly appreciated. We will try to continue to make good product to maintain that s... Read More
Cheap material strips easily
About a third of the screws stripped trying to attach wood pallets. Garbage.
From R4 #12 x 5-5_SLASH_8-in Polymer Exterior Multi-material screws 50 -Per Box Verified Purchaser
Hi, Drew. Thank you for sharing your feedback. We are sorry to hear that your experience with our product did not match your expectations. Please fee... Read More
Hi there, thanks for sharing your positive experience with our R4 Screws. We work hard to make sure our products are well designed. We’d love to have... Read More