Bolt Base A2 Stainless Steel Hex Full Nuts M5 X 0.8mm Pitch - 100 Corrosion Resistant A2-70 Stainless Steel Hex Full Nuts- DIN 934 5mm Metric Thread, M5 - 0.8mm Pitch Spanner/ Wrench Size- 8mm Not Suitable For Replacing High Tensile Fasteners