Ratings & Reviews for GRK R4 #8 x 1-1/2-in Polymer Exterior Multi-material screws 110 -Per Box
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise these screws for exceptional driving ease and superior anti-stripping performance, even in dense hardwoods and under high torque. The included star driver bit is frequently cited as a convenient value-add that holds up well throughout use. Reviewers consistently report strong, reliable holding power across diverse applications including decking, cabinetry, and heavy-load projects, with many noting the self-countersinking design eliminates pre-drilling. The secure head design and tight fit prevent slippage and ensure maximum torque transfer. A few mention limitations with metal studs, but the vast majority consider these screws exceptional and worth the investment.
Customer review summary generated by AI, including incentivized reviews.Use bit provided
Would RecommendExcellent product. My first time using this brand. Has its own specialty bit.
Verified PurchaserVerified Pro
Super-glad these came along
Would RecommendI like working with these GRK screws SO much better than working with Philips-head screws. I doubt I will ever go back to the old now that I know about GRK. I went through nearly a whole box of these with a couple of handicap ramps I built last month. I used these to screw down 1-inch deck boards on the ramps where people will use them. Every screw was identical with all the others, not a bad one in the box. I also like the way they include a driver bit in the box.
Verified Purchaser
These suck! They do not hold panels to metal studs
Would Not Recommendthey do not hold panels to metal studs....they loosed up and will not tighten.
Verified Purchaser
Garbage
Would Not RecommendUsed on exterior project. Snapped days later expected quality for the price not so. Stay away
Really good screws
They are really good screws no strippung of the head like most
Verified Purchaser
I love GRK screws
These are the easiest to use screws I have ever worked with.
Review for a box of screws
Would Not RecommendVerified Purchaser
A Really Great Product!
Would RecommendFirst time I have used this brand and type of product. It was self countersinking and worked smoothly. I'll use these screws again! Try them and you will like them.
Verified Purchaser
great construction screw
Would RecommendExcellent performance- self drilling, self countersinking with sharply defined and non-dimpled hole for the screw head; driver bit included but couldn't find this described on the case so I needlessly purchased a screw bit.
Verified Purchaser
Great new screw type. Bit really drove in screws.
Would RecommendThis is a follow on to the plywood sheet review. Needed good screws to hold down attic panels across rafters and I like the bit they have come up with. Will buy again when needed.
Verified Purchaser
unorganized and chaotic no idea where material was
Would Recommendproduct works fine customer different story had to wait for them to get materials from the shelves since they had no idea where they had placed the material that was “put aside” this in and out took over 30 minutes for them to figure out what was going on.