Copper Washer Set 300 Piece Flat Ring Assortment Kit With 12 Size Range M5 M6 M8 M10 M12 M14 M16 M20 High Conductivity Copper Washers Durable Resealable Storage Case Ideal For Electrical Automotive And Home Projects

Copper Washer Set: 300-Piece High-Conductivity Copper Kit
✔️ 300-piece set in 12 sizes (M5-M20) copper washers

These copper washers provide tight, conductive seals for threaded connections and are commonly used in electrical panels, automotive assemblies, and home projects.

✅ 300-piece set with 12 size options (M5-M20) and multiple ID/OD/thick specs
✅ High-conductivity copper for reliable electrical connections
✅ Includes rugged resealable storage case for organization
✅ Precisely sized options for electrical, automotive and home projects

💡 What is a handy use for copper washer sets in everyday assemblies?

These washers support reliable conductivity and sealing in threaded joints across equipment.

- Efficient electrical connections for automotive, marine, and home gear
- Maintains torque and prevents leaks in bolt-type joints
- Works with sizes from M5 to M20 for broad compatibility
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