S-97725A243 4.3 mm ID x 8 mm OD Metal Sealing Washers
Metal Sealing Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior electrical conductivity from pure copper material ensures reliable current flow in electrical assemblies
- Excellent corrosion resistance maintains performance in harsh or humid environments
- Precision dimensional tolerances (4.3mm ID x 8mm OD) guarantee perfect fit for M4 screw applications
- Optimized thickness range (0.8-1.2mm) provides ideal compression and sealing characteristics
- Full regulatory compliance with RoHS 3 and REACH standards for global market acceptance
- Non-magnetic properties make these washers ideal for sensitive electronic equipment
- Durable copper construction ensures long service life without degradation in electrical performance
Professional Applications & Engineering Value
These M4 metric copper flat washers deliver critical engineering solutions where electrical conductivity and corrosion resistance are paramount. The copper material provides exceptional current-carrying capacity while resisting oxidation in demanding environments. Precision-engineered with 4.3mm inner diameter and 8mm outer diameter, these washers create reliable electrical connections in panel boards, terminal blocks, and grounding systems. The 0.8-1.2mm thickness range allows for optimal compression while maintaining consistent contact pressure. Ideal for electrical applications, automotive electronics, and marine equipment, these washers prevent galvanic corrosion when used with dissimilar metals, extending the lifespan of your assemblies.
Specification Summary & Compliance
This flat washer features metric dimensions with 4.3mm ID specifically designed for M4 screw size applications, 8mm OD for optimal load distribution, and 0.8-1.2mm thickness range for versatile installation requirements. Manufactured from high-purity copper for maximum electrical conductivity. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in international markets. These washers meet industry standards for electrical applications where reliable performance and regulatory compliance are essential.
