Fabbay 100 Pcs Polypropylene Washers 60 mm for Fixing

Used these to hold down weed barrier with 4 inch nails, worked great

I thought they were a little high on cost when I purchased them but they did the job. Only downside; now the cost is even higher. Will have to find a seller with a larger bulk purchasing price as this one only has 200 in a package and I'm sure a commercial dealer will sell several thousand for far less per piece. Again, product did the job!

Good quality.

After trying several brands of capnails and swearing like a sailer i looked around for other ideas. Came across these and its been smooth installations ever since. Pictured is 2" foam (3" screws through these)

These are nice but kept breaking for my application. I was trying to use them to hang dimpleboard on my foundation for below grade waterproofing. I first installed sheet membrane waterproofing then am hanging dimpleboard before they backfill. I was using 1 1/2 inch ramset nails with and without the washer. I tried both but 3 out of 4 would break into pieces. I was using them in 40 degree weather, maybe that didn't help. My concrete was poured 6 weeks ago.

Showed up the next day and these washers will work great for my needs. Installing Rockwool to the bottom side of 2x6 T&G subfloor.

Pretty basic product but solid. I purchased these to secure foamboard to the attic ceiling with blown in insulation ontop that was falling down. They were used to replace the plastic washer nailers. The larger size and harder structure of these made it superior to the flimsyness and small size of the nailers.

I used over 100 of these washers to install some 1-inch thick Owens Corning FOAMULAR NGX F-150. I read another review where the reviewer commented that many of them broke. I had one break when I was tired and I very obviously drove the Tapcon screw too far. I was driving with Ridgid 12V driver, which was the perfect tool for the job, IMHO. Client was delighted as was his GC.

Only ordered on package to confirm correct item and size. They are what we wanted and meet the sellers description. Will be ordering more.