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When your project demands fasteners that are both functional and visually striking, standard steel bolts just don't cut it. Whether you're building a custom RC model, assembling a precision aluminum frame, or finishing a high-end bicycle component, these M4 aluminum alloy socket cap screws deliver the corrosion resistance and clean aesthetics your work deserves.
Machined from aerospace-grade aluminum alloy and finished with a durable anodized coating, each bolt features a hex socket cap head (Allen drive) and is available in lengths from 6mm to 30mm (approximately 0.24" to 1.18"). The anodized surface adds a hard, color-fast layer that resists scratching, oxidation, and everyday wear.
These screws are a go-to choice for aluminum bicycle frame assembly, drone and RC aircraft builds, computer case modding, mold tooling fixtures, and decorative mechanical projects where weight savings and color coordination matter.
Ideal for assembling high-end aluminum alloy bicycle frames and components where weight reduction and visual appeal are priorities.
Lightweight aluminum construction makes these bolts a natural fit for aerospace models, RC aircraft, and drone frames where every gram counts.
Add a pop of color to custom computer cases, cooling systems, and electronics enclosures with anodized bolts that stand out from standard hardware.
Perfect for mold processing, mechanical equipment assembly, and any project requiring corrosion-resistant, lightweight fasteners with a professional finish.
| Material | Aluminum Alloy |
|---|---|
| Thread Diameter | M4 |
| Available Lengths | 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 25mm, 30mm |
| Head Style | Hex Socket Cap Head (Allen Drive) |
| Drive Type | Hex / Allen Key |
| Surface Treatment | Anodized |
| Available Colors | Dark Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple |
| Tolerance | ±0.3mm |
| Thread Type | See variant options |
| Quantity per Order | See variant options |
These bolts are machined from aluminum alloy and finished with an anodized coating. The anodized surface provides a hard, color-fast layer that resists corrosion, scratching, and oxidation.
All bolts are M4 thread diameter. Lengths available are 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 25mm, and 30mm. Select your preferred color and length combination from the variant options above.
These are hex socket cap head bolts, so they require a standard hex key (Allen key/wrench) for installation. The specific hex key size needed is typically 3mm for M4 socket cap screws.
The anodized aluminum construction offers good corrosion resistance, making these bolts generally suitable for light outdoor applications. However, for prolonged exposure to harsh weather or saltwater environments, additional protection may be advisable.
These bolts are manufactured to a tolerance of ±0.3mm, ensuring consistent dimensions and reliable thread engagement across all size variants.
Yes. These M4 aluminum alloy bolts are compatible with M4 threaded holes in aluminum, plastic, and other lightweight structural materials. For high-load steel-to-steel applications, a steel bolt is generally recommended instead.
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.
