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Youâre building a lightweight drone, customizing a motorcycle, or assembling a piece of highâend camera gear â and steel screws are just too heavy. These M4 hex socket pan head screws are machined from 7075 aluminum alloy, then anodized in your choice of color. The result is a fastener thatâs strong, corrosionâresistant, and about oneâthird the weight of steel. The hex socket (Allen) drive lets you torque them precisely without slipping, while the pan head provides a wide bearing surface. Available in lengths from 6mm to 14mm (M4 x 0.7 thread). Perfect for aerospace projects, bicycle parts, electronics enclosures, or any build where every gram matters.
| Thread Diameter (M) | Thread Pitch (mm) | Length (mm) * | Material | Finish | Typical Weight (approx.) |
|---|---|---|---|---|---|
| đ Fully threaded â length measured from under the head to tip | |||||
| M4 | 0.7 | 6 | 7075 Aluminum | Anodized (color option) | ~0.2g |
| M4 | 0.7 | 8 | 7075 Aluminum | Anodized | ~0.25g |
| M4 | 0.7 | 10 | 7075 Aluminum | Anodized | ~0.3g |
| M4 | 0.7 | 12 | 7075 Aluminum | Anodized | ~0.35g |
| M4 | 0.7 | 14 | 7075 Aluminum | Anodized | ~0.4g |
* Length = threaded portion under the head. Overall length adds approx. 2mm for pan head. Custom lengths available on request.
| Property | Value / Description |
|---|---|
| Alloy grade | 7075 (zincâbased, highest strength of common aluminum alloys) |
| Tensile strength | ~570 MPa (comparable to mild steel) |
| Density | 2.81 g/cmÂł (approx. 1/3 of steel) |
| Surface treatment | Anodized â colored, hard, corrosionâresistant layer |
| Corrosion resistance | Good (anodized layer protects against moisture and mild chemicals) |
| Magnetic | Nonâmagnetic â safe for electronics and sensitive equipment |
| Typical applications | Aerospace, drones, bicycles, camera rigs, automotive racing, electronics, lightweight structures |
1. Are these screws strong enough for structural applications?
7075 aluminum has a tensile strength of about 570 MPa, which is similar to mild steel (400â550 MPa). They are absolutely strong enough for most structural and loadâbearing applications â bike stems, drone frames, camera rigs. However, they are slightly less hard than steel, so avoid overâtorquing. Use a torque wrench for critical assemblies.
2. Will the anodized color scratch or wear off?
Anodizing is an electrochemical process that creates a hard, bonded oxide layer. It resists scratching much better than paint or plating. However, heavy abrasion or contact with harder materials (steel tools) can leave marks. For normal assembly and use, the color stays intact.
3. Can I use these screws outdoors or in saltwater?
Anodized aluminum has good corrosion resistance in freshwater and mild outdoor environments. For saltwater or coastal areas, untreated aluminum can corrode â but the anodized layer provides protection. For continuous marine use, we recommend clearâcoating or using stainless steel. For most landâbased outdoor projects (bicycles, garden equipment, drones), these are fine.
4. What hex key size do I need for these M4 screws?
Standard M4 socket cap screws use a 3mm hex key (Allen wrench). The pan head design typically uses the same size. Always use a good quality hex key that fits snugly to avoid rounding the socket.
5. How do I measure the length of a pan head screw?
For pan head screws, length is measured from the underside of the head (the flat bearing surface) to the tip. The head itself is not included. So an âM4 x 10mmâ screw has a 10mm threaded shaft under the head. Our lengths follow this standard.
6. Do you offer other colors or custom lengths?
Yes â we can anodize in many colors (red, blue, black, gold, green, etc.) and can produce custom lengths. Contact customer service with your requirements. Minimum order quantities may apply for custom runs.
