M10 x 50 x 50mm (3mm Thick) Square Plate Washers A2 Stainless (304) DIN 436

A2 (304) stainless steel square plate washers are heavy-duty washers used primarily in timber construction, decking, and roofing to spread bolt loads over larger areas, preventing the bolt head or nut from sinking into soft materials like wood, and are also used in heavy structural applications like metal channel (Unistrut) framing for better stability and corrosion resistance.