M8 M10 M12 M16 M20 STAINLESS STEEL SQUARE PLATE WASHERS THICK HEAVY DUTY A2 / A4

Choose M8, M10, M12, M16, M20. Square plate washers are often used in timber construction to prevent fasteners pulling in to the timber by spreading the load over a larger area, available in either A2 or A4 grades of stainless steel.