Copper washers are precision-engineered flat discs with central holes, manufactured from pure electrolytic copper with minimum 99% copper content. These components serve dual purpo...

Copper washers are precision-engineered flat discs with central holes, manufactured from pure electrolytic copper with minimum 99% copper content. These components serve dual purposes: distributing the load of threaded fasteners like bolts and screws while providing excellent electrical and thermal conductivity. Available in outer diameters from 4mm to 100mm and thicknesses from 0.5mm to 5mm, they come in both soft annealed and hardened tempers to match specific application requirements. Their 1083°C melting point and hardness range of 45-90 HV ensure performance stability across demanding operating conditions.

These washers find essential usage across multiple industrial sectors. In electrical systems, they ensure reliable conductivity in bus bars, terminals, and grounding applications. Automotive and mechanical applications utilize them as crush washers for oil drain plugs, fuel systems, and hydraulic fittings where leak-proof sealing is critical. Plumbing and HVAC systems employ copper washers in pipe joints and valve fittings for pressure sealing. Aerospace and marine engineering applications benefit from their corrosion resistance in fastener assemblies, while industrial machinery uses them as vibration dampeners and load distributors in high-stress assemblies.

The business value of these copper washers lies in their reliability and material consistency. Pure copper construction ensures predictable performance in both electrical and mechanical applications, reducing system failures and maintenance requirements. Their availability in multiple types—flat washers for general use, sealing washers for pressure applications, and crush washers for permanent deformation sealing—provides application-specific solutions. The dimensional customization options allow precise matching to existing fastener systems, while the choice between soft and hard tempers enables optimization for either sealing deformation or structural integrity needs.

Key Features:
- Manufactured from pure electrolytic copper with minimum 99% copper content for consistent material properties
- Available in three functional types: flat washers, sealing washers, and crush washers for specific application needs
- Offered in both soft annealed and hardened temper conditions to match mechanical requirements
- Customizable dimensions with outer diameter from 4mm to 100mm and inner diameter from 2mm to 90mm
- High melting point of 1083°C and hardness range of 45-90 HV for thermal and mechanical stability

Benefits:
- Excellent electrical and thermal conductivity ensures reliable performance in power and heat transfer applications
- Corrosion-resistant pure copper construction maintains integrity in harsh environmental conditions
- Even load distribution prevents fastener damage and maintains joint integrity under vibration
- Multiple washer types and temper options provide application-specific solutions without compromise
- Dimensional customization allows perfect fit with existing fastener systems and assembly requirements