Killer Copper Flat Washers 280 Pcs Set 12 Sizes Screws Bolts Fasteners Storage Case High Conductivity Electrical Grounding Thermal Dissipation Pro Gear Current Flow Durable Reliable Perfect For Diy Pros

280 Piece Copper Flat Washers Electrical Grounding Kit Pros
✔️ M5 To M20 Sizes 1mm Thick Pure Copper Storage Box Organization Plan

This pack holds 280 pieces ideal for automotive and electronics repair where metal parts corrode.

✅ 280 piece set includes metric sizes ranging from m5 up to m20
✅ Packaging stays organized with clear labels on each size section
✅ Prevents oxidation so connections remain stable during long runs

💡 Why do some mechanics select copper washers for engine assemblies?
- Low heat buildup helps maintain steady torque settings on bolts
- Non magnetic material prevents interference with sensitive sensors nearby
- Natural conductivity ensures better bonding efficiency compared to zinc