Aluminum Alloy Cone Washers — Anodized, Load Spreading, M2 to M8, 11 Colors
Standard flat washers can sink into soft materials under load, concentrating stress around the bolt hole and causing surface damage or pull-through in aluminum panels, composite frames, and plastic enclosures. These aluminum alloy cone washers use a tapered conical profile to spread the clamping load over a larger surface area, reducing the risk of surface damage and pull-through in softer materials while adding a clean, color-matched anodized accent to your build. Available in 7 metric sizes from M2 to M8 and 11 anodized colors.
Each washer is machined from high-strength aluminum alloy with an anodized surface treatment for excellent corrosion resistance and rust prevention. The cone (tapered) profile seats against the bolt head or nut, distributing clamping force over a wider contact area than a standard flat washer. This load-spreading function is particularly useful in RC model frames, aviation model assemblies, bicycle frame builds, and computer case panel fastening where the fastened material is softer than the fastener. Tolerance: ±0.3mm.
These aluminum cone washers are widely used in aerospace industry model assemblies, aviation model toy accessories, high-end aluminum alloy bicycle frame builds, golf club head assemblies, mechanical equipment, mold processing, computer case accessories, and any DIY precision build where a lightweight, corrosion-resistant, color-matched load-spreading washer is needed to protect soft material surfaces from fastener pull-through and surface damage.
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Available in M2, M2.5, M3, M4, M5, M6, and M8 metric thread sizes. Cone (tapered) profile — seats against bolt head or nut to spread clamping load over a larger surface area. 11 anodized colors: Sky Blue, Royal Blue, Rose Red, Orange, Purple, Green, Dark Red, Golden, Titanium Gray, Silver, Black. Tolerance: ±0.3mm.
✅ Key Features of These Aluminum Cone Washers
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Cone (Tapered) Profile — Load Spreading, Reduces Pull-Through Risk: The tapered conical profile seats against the bolt head or nut, distributing clamping force over a larger contact area than a standard flat washer. This load-spreading function reduces the risk of the fastener pulling through or sinking into softer materials such as aluminum panels, composite frames, plastic enclosures, and thin sheet materials commonly used in RC models, drones, and computer cases.
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High-Strength Aluminum Alloy — Lightweight, Non-Magnetic, Corrosion Resistant: Machined from high-strength aluminum alloy with an anodized surface treatment for excellent corrosion resistance and rust prevention. Aluminum is significantly lighter than steel and non-magnetic, making these washers ideal for weight-sensitive and magnetically sensitive precision builds such as RC models, FPV drones, and computer assemblies where every gram counts.
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11 Anodized Color Options — Color-Match or Color-Code Your Build: Available in Sky Blue, Royal Blue, Rose Red, Orange, Purple, Green, Dark Red, Golden, Titanium Gray, Silver, and Black anodized finishes. Color-match your RC model frame or bicycle build, color-code different fastener zones for quick identification, or add a custom accent to your computer case mod. The anodized finish is integrated into the aluminum surface for a hard, color-fast layer that resists fading and chipping under normal use conditions.
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7 Metric Sizes — M2 to M8: Available in M2, M2.5, M3, M4, M5, M6, and M8 metric thread sizes, covering a wide range of fastening requirements across RC model, aviation model, bicycle frame, computer case, and general DIY precision build applications. Select your preferred size and color from the variant options above.
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Surface Protection — Prevents Fastener Marks on Finished Surfaces: The cone profile and larger contact area help prevent the bolt head or nut from leaving marks or indentations on finished aluminum, composite, or plastic surfaces during assembly and under clamping load, preserving the appearance of your build.
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±0.3mm Precision Tolerance — Consistent Fit Across All Sizes: Consistent ±0.3mm tolerance ensures accurate fit and consistent load distribution across all sizes and colors. Good mechanical performance, good wear resistance, and good usability across a wide range of metric fastener applications.
🎯 Who Is This For?
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RC Model, FPV Drone & Aviation Model Builders
Ideal for RC model vehicle frames, FPV drone builds, and aviation model toy assemblies where lightweight, color-matched aluminum cone washers protect soft frame materials from fastener pull-through and add a clean, color-matched accent to the finished build.
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Bicycle Frame & Sports Equipment Builders
Used in high-end aluminum alloy bicycle frame assembly and golf club head builds where lightweight, corrosion-resistant cone washers distribute clamping load across soft material surfaces and provide a color-matched anodized finish to complement the frame or component color scheme.
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Computer Case Modders & Electronics Builders
Suitable for computer case panel fastening, bracket mounting, and electronics enclosure assembly where lightweight aluminum cone washers protect thin panel materials from fastener marks and pull-through while adding a color-matched accent to the finished case mod.
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DIY Makers & Precision Build Enthusiasts
Perfect for any DIY modification project, custom enclosure build, or precision assembly where a lightweight, anodized color-matched cone washer provides both load-spreading surface protection and a clean, professional appearance to the finished assembly.
| Material |
Aluminum Alloy (Anodized) |
| Washer Type |
Cone Washer (tapered / load spreading) |
| Available Sizes |
M2 / M2.5 / M3 / M4 / M5 / M6 / M8 |
| Available Colors |
Sky Blue, Royal Blue, Rose Red, Orange, Purple, Green, Dark Red, Golden, Titanium Gray, Silver, Black (anodized) |
| Surface Treatment |
Anodizing (corrosion & oxidation resistant) |
| Profile |
Cone (tapered) — load spreading, reduces pull-through in soft materials |
| Tolerance |
±0.3mm |
| Typical Applications |
RC models, FPV drones, aviation model toys, bicycle frames, golf club heads, mechanical equipment, computer case mods, DIY precision builds |
❓ Frequently Asked Questions
What is a cone washer and how does it differ from a standard flat washer?
A cone washer has a tapered conical profile rather than a flat face. When installed under a bolt head or nut, the cone profile seats against the fastener and distributes the clamping load over a larger contact area than a standard flat washer. This load-spreading function reduces the risk of the fastener pulling through or sinking into softer materials such as aluminum panels, composite frames, and plastic enclosures.
Which way does the cone face when installing?
The cone (tapered) face typically seats against the bolt head or nut, with the wider flat face resting against the material surface. This allows the cone profile to distribute the clamping load from the fastener across the washer’s contact area. Check your specific application requirements, as installation orientation may vary depending on the fastener and material combination.
Are these washers suitable for use with standard metric bolts and screws?
Yes. These cone washers are sized for standard metric thread sizes (M2, M2.5, M3, M4, M5, M6, M8) and are compatible with standard metric bolts, screws, and nuts of the corresponding size. The ±0.3mm tolerance ensures consistent fit across all sizes.
Are these washers lighter than steel washers?
Yes. Aluminum alloy is significantly lighter than steel — typically about one-third the weight for the same volume. These washers are also non-magnetic, making them suitable for applications where magnetic interference must be avoided, such as near sensitive electronics or sensors in RC models and drones.
Will the anodized color fade or chip over time?
The anodized finish is integrated into the surface of the aluminum rather than applied as a paint or coating, making it generally more resistant to fading and chipping than painted alternatives under normal use conditions. Hard impacts or heavy abrasion may leave marks, as with any aluminum hardware.
Can I use these washers on both sides of a panel?
Yes. Using a cone washer under both the bolt head and the nut provides load spreading on both faces of the panel, further reducing the risk of pull-through and surface damage on both sides of the fastened material. This is commonly done in thin panel and composite frame applications.
What sizes are available?
These aluminum cone washers are available in M2, M2.5, M3, M4, M5, M6, and M8 metric thread sizes. Select your preferred size and color from the variant options above.
🛒 Select your Color and Size (Thread Diameter) above, then add to cart.
