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Aluminium Washers
Aluminium washers are manufactured from high-grade aluminium alloys, designed to provide load distribution, spacing, and secure fastening in mechanical assemblies. Their low density (approximately a quarter the weight of steel) combined with excellent tensile strength and fatigue resistance, makes them ideal for applications where weight saving and structural integrity are critical. Aluminium's natural oxide layer provides inherent corrosion resistance, while retaining thermal stability and electrical conductivity, making these washers suitable for a wide range of industrial, aerospace, and marine applications.
They are commonly produced to a standard to allow compatibility across a range of manufacturers, the most common standards are DIN125 in which the outside diameter of the washer is twice that of the inside diameter. Commonly used in PCB assemblies in combination with Hex Standoffs.
What Are Aluminium Washers Used For?
Aluminium washers are widely used in assemblies where weight reduction, corrosion resistance, and mechanical strength are essential. Their malleable nature allows them to absorb stress and prevent damage to fasteners and mating surfaces, while their strength ensures reliable performance in long-term applications. Common uses include:
- Aerospace and aviation – reducing weight while maintaining structural integrity
- Marine and offshore equipment – corrosion-resistant fasteners in harsh environments
- Electronics and electrical assemblies – excellent conductivity and lightweight properties
- Automotive and performance machinery – precision spacing and load distribution
Why Choose Aluminium Washers?
Aluminium washers offer a unique balance of strength, low weight, and corrosion resistance, making them ideal for high-performance and environmentally exposed applications. Compared to steel or brass washers, aluminium reduces assembly weight without compromising durability or reliability.
How Does Aluminium Compare to Other Materials?
Aluminium washers outperform many metals in weight-sensitive applications while maintaining excellent corrosion resistance. Unlike Zinc-coated Steel or Brass, Aluminium forms a protective oxide layer that prevents further corrosion, making it ideal for marine, offshore, and aerospace environments.
If you need assistance selecting the right washer or would like to discuss custom options, contact our expert team at 01233 713581
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