M8 x 16mm OD Black Flat Washer, 18-8 (304) Stainless Steel Black Coating Black Washer, 50Pcs

These look fantastic with 5/16” bolts. They’re a touch smaller than 5/16” flat washers. M8 is great. Quality product, no issues

Good steel washers. As good as any other washers I have used. delivered in a heavy duty zip lock bag.

They are sturdy and rustproof

No complaints.

These are thinner than the SS washers I would buy at the local home improvement store, but they are MUCH less expensive, so I suppose it evens out. It will be fine for many purposes. Some 1-star reviews claimed that they are not SS because they are magnetic. I haven't tried that, but ferritic stainless steel is definitely magnetic due to the presence of ferrite. I don't know the composition of these washers, but magnetism is not a good test. Leave it out in the rain and see if it rusts. That is the better test. If these rust, I'll report back.

Bought it for my table. I have used it for free months and everything goes good.

bought these along with locking ones for building a rear cargo hitch carrier that lacked any washers. these fit the bill perfectly and i have plenty to spare. would buy again.

It's a washer, it is stainless steel. Worked as intended.

einwandfreie Qualität, gute Verarbeitung, nix zu meckern

Statt 21,0 mm nur 19,5 mm Durchmesser. Hatte mir eigentlich was dabei gedacht. Nun nicht verwendbar. (Edelschrott).

Die gelieferte Ware passt nicht zu den Bildern. Und dann sind die Unterlegscheiben auch noch kleiner als angegeben. 11,7 Durchmesser, 6,4 Lochdurchmesser und 1,4 Dicke.