Stainless Steel Slimline Easy fix Washers - 34mm Diameter Pack of 100 Pieces for Insulation Tile Backer Boards

They work like they're supposed to. They are magnetic so not sure what grade of stainless they are... if even they are stainless...

Perfect. Used these washers on Warmup 6mm insulation board (polystyrene with reinforced cement skin). The two little spikes pierced the skin nicely anchoring the washer while tightening the screw. Very please with this product and the shipping was spot on too. Highly recommended 👌

Excellent quality washers very quick service would recommend this supplier

just the job for fixing elements board. And good value

Much like others, of you're looking for stainless steel fixing gs to support tile backer boards / nassboards, look elsewhere as these are magnetic, therefore they are steel, just not stainless. They WILL rust over time, but I guess you won't notice that for a few years until the boards fall off. That said they do have good grip rods, that pull into the boards, and yes they are also steel...

Just the job for holding in place the under boards.

Easy to use & did job great

If I had wanted galvinised steel washers I would have bought them for £6.00 per 100. I spent the extra money for stainless steel. This has wasted me time I didn't have to spare. Do I return them and waste even more time. Amazon should remove sellers who are ripping people off