Bolt Base A2 Stainless Steel Hex Full Nuts M2 X 0.4mm Pitch - 100 Corrosion Resistant A2-70 Stainless Steel Hex Full Nuts- DIN 934 2mm Metric Thread M2 - 0.4mm Pitch Spanner/ Wrench Size- 4.5mm Not Suitable For Replacing High Tensile Fasteners