Bolt Base 6mm A2 Stainless Steel Nylon Insert Nyloc Nylock Lock Nuts M6 X 1.0mm Pitch - 75 Corrosion Resistant A2-70 Stainless Steel Nyloc Lock Nuts- DIN 985 6mm Metric Thread, M6 - 1.0mm Pitch Spanner/ Wrench Size- 10mm Not Suitable For Replacing High Tensile Fasteners