This listing is for new Stainless Steel Metric Hex Flange Nuts (DIN 6923). These have a A2-70 / 18-8 Grade rating.

Available Sizes :

M3 / 3mm x 0.50, M4 / 4mm x 0.70, M5 / 5mm x 0.80,

M6 / 6mm x 1.0, M8 / 8mm x 1.25, M10 / 10mm x 1.50,

M12 / 12mm x 1.75