Need some seriously sturdy washers for a project? This 25-pack of M6 metric washers from Rivercity Fastener is exactly that. These aren't your flimsy, thin washers; they're labeled 'extra thick' and 'heavy duty,' which means they provide a wider bearing surface and more clamping force. They're perfect for high-stress applications, machinery, automotive work, or anywhere you need to prevent a nut from digging into a soft material or just want a more robust connection. The hole size is 6mm, designed for M6 bolts and screws. They're made from A2 grade stainless steel, which offers good corrosion resistance (not for constant saltwater exposure, but great for most environments). The finish is a standard stainless look. Having a pack of 25 means you've got plenty for your current job and some left over for the toolbox. Exact interior diameter, exterior diameter, and thickness should be checked in the description or photos, as 'extra thick' can vary. But for heavy-duty fastening needs in metric sizes, these are a reliable, industrial-quality option. Keep your assemblies tight and secure with these beefy stainless washers.