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Standard steel washers add unnecessary weight and corrode over time — a real problem when you’re building precision aluminum frames, RC aircraft, or high-end bicycle components. These aluminum alloy cone cup head washers are engineered to spread fastener load evenly while keeping your build light, corrosion-free, and visually sharp.
Machined from high-strength aluminum alloy and finished with a durable anodized coating, each washer features a cone cup head profile that seats cleanly under bolt heads and screws. Available in thread sizes M2 through M8 (approximately 0.08” to 0.31”) and five anodized color options, with a manufacturing tolerance of ±0.3mm for consistent fit.
These washers are ideal for aluminum bicycle frame assembly, drone and RC model builds, computer case modding, mold tooling fixtures, and any precision project where weight savings, corrosion resistance, and color coordination are priorities.
Ideal for high-end aluminum alloy bicycle frame assembly where lightweight fastener hardware and visual appeal are equally important.
The lightweight aluminum construction makes these washers a natural fit for aerospace models, RC aircraft, and drone frames where minimizing weight is critical.
Add a pop of color to custom computer cases, cooling systems, and electronics enclosures with anodized washers that complement your build’s color scheme.
Suitable for mold processing, mechanical equipment assembly, and any project requiring corrosion-resistant, lightweight load-spreading hardware with a clean finish.
| Material | Aluminum Alloy |
|---|---|
| Available Sizes (Thread Diameter) | M2, M2.5, M3, M4, M5, M6, M8 |
| Head Style | Cone Cup Head |
| Surface Treatment | Anodized |
| Available Colors | Blue, Red, Black, Yellow, Aluminum Color (Natural) |
| Tolerance | ±0.3mm |
| Alloy Properties | High strength, heat treatable, good mechanical performance, wear resistant, corrosion resistant |
| Outer Diameter | See variant options |
| Thickness | See variant options |
These washers are machined from high-strength aluminum alloy and finished with an anodized coating. The anodized surface provides a hard, color-fast layer that resists corrosion, scratching, and oxidation.
These washers are available in M2, M2.5, M3, M4, M5, M6, and M8 thread diameter sizes. Select your preferred color and size combination from the variant options above.
A cone cup head washer features a tapered, conical profile that seats cleanly under a bolt head or screw. This shape distributes the clamping load over a wider surface area, helping to protect softer materials like aluminum and plastic from being damaged or deformed by fastener pressure.
The anodized aluminum construction offers good corrosion resistance, making these washers generally suitable for light outdoor applications. For prolonged exposure to harsh weather or saltwater environments, additional protection may be advisable.
These washers are manufactured to a tolerance of ±0.3mm, ensuring consistent dimensions and reliable fit with standard metric fasteners across all size variants.
The anodized finish is integrated into the surface of the aluminum rather than applied as a paint or coating, which means it is generally more resistant to fading and chipping than painted alternatives under normal use conditions.
Yes, these aluminum washers are compatible with standard metric steel bolts in the corresponding M2–M8 sizes. Keep in mind that aluminum is softer than steel, so they are best suited for applications where load levels are within the alloy’s mechanical limits.
