Bolt Base M6 ( 6mm )A2 Stainless Steel Hexagon Left Hand Thread Full Nuts Hex Reverse Nut - 5 Pack Corrosion Resistant A2-70 Stainless Steel Left Hand Hex Full Nuts - DIN 934 6mm Metric Thread, M6 - 1.0mm Pitch Spanner/ Wrench Size- 10mm Not Suitable For Replacing High Tensile Fasteners