6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8
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6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M86063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8

6063 Aluminium Allen Socket Countersunk Screws DIN 7991 — M2 to M8

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In stock (500 units), ready to be shipped

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Description

Aluminium Countersunk Screws DIN 7991 — Flush-Fit Fastening for Lightweight Builds

When you need a clean, flush surface finish without adding unnecessary weight, standard steel screws simply don't cut it. Engineers, makers, RC hobbyists, and fabricators working with aluminium frames, electronics enclosures, and carbon fiber panels need a fastener that disappears into the surface — and won't corrode or add bulk. These 6063 aluminium Allen socket countersunk screws are built for exactly that job.

Each screw is machined from 6063 aluminium alloy and conforms to the DIN 7991 standard with a 90° countersunk head and a hex socket (Allen) drive. Available in sizes from M2 x 4mm (≈5/32" x 5/32") up to M8 x 40mm (≈5/16" x 1-9/16"), with quantity options ranging from 20 to 1,000 pieces per order. Thread pitch follows the ISO metric coarse standard throughout the range.

Typical applications include aluminium extrusion assemblies, drone and RC frame builds requiring lightweight metric fasteners, electronics enclosure panels, acrylic and polycarbonate fixtures, and carbon fiber composite structures where galvanic compatibility and flush-head aluminium screws are required.

✅ Compatible with standard metric tapped holes M2–M8 (ISO metric coarse thread, DIN 7991). Requires metric hex key: 1.5mm (M2) to 6mm (M8). Not compatible with UNC/UNF inch threads.

✅ Key Features of These Aluminium Countersunk Screws DIN 7991

  • ⚖️ Lightweight 6063 Aluminium Alloy: Significantly lighter than steel equivalents, making these flush-head aluminium screws ideal for weight-sensitive builds like drone frames and portable enclosures.
  • 🔩 90° DIN 7991 Countersunk Head: The flat, flush-sitting head conforms to the DIN 7991 standard, compatible with standard 90° countersunk holes in aluminium, plastic, and composite panels.
  • 🔑 Hex Socket (Allen) Drive: Internal hex drive allows high torque application in tight spaces without the cam-out risk of Phillips or slotted heads — critical when working with softer aluminium material.
  • 🛡️ Natural Corrosion Resistance: 6063 aluminium forms a protective oxide layer, offering good resistance to atmospheric corrosion — suitable for indoor and general outdoor applications without additional coating.
  • 📐 Wide Size Range M2–M8: Covers the most common metric countersunk screw sizes from M2 x 4mm up to M8 x 40mm, reducing the need to source from multiple suppliers for a single project.
  • 📦 Flexible Quantity Options: Order from 20 pieces for prototyping up to 1,000 pieces for production runs, with per-unit cost scaling down at higher quantities.

🎯 Who Is This For?

🚁 Drone & RC Frame Builders

Every gram counts in aerial builds. These lightweight aluminium countersunk screws keep frames rigid and flush without the weight penalty of steel fasteners.

🖥️ Electronics Enclosure Fabricators

Achieve a clean, professional panel finish on aluminium and acrylic enclosures. The flush head eliminates snag points and improves aesthetics.

🔧 Makers & Prototype Engineers

From small-batch prototypes to production runs, the M2–M8 size range and 20–1,000 piece quantity options cover every stage of development.

🏗️ Carbon Fiber & Composite Panel Assembly

Aluminium fasteners eliminate galvanic corrosion risk when used with carbon fiber or aluminium substrates — a critical consideration for structural composite builds.

Material 6063 Aluminium Alloy
Standard DIN 7991
Head Type Countersunk (Flat Head), 90° angle
Drive Type Hex Socket (Allen / Internal Hex)
Thread Standard ISO Metric Coarse (M-series)
Size Range (Diameter) M2, M2.5, M3, M4, M5, M6, M8
Length Range 4mm (≈5/32") to 40mm (≈1-9/16")
Hex Key Size 1.5mm (M2) / 2mm (M2.5) / 2.5mm (M3) / 3mm (M4) / 4mm (M5) / 5mm (M6) / 6mm (M8)
Tensile Strength (typical) Typically 145–186 MPa (21,000–27,000 psi)
Finish Mill finish (natural aluminium)
Quantity Options 20 / 40 / 50 / 100 / 200 / 500 / 1000 pieces
Galvanic Compatibility Compatible with aluminium substrates; contact us to confirm for other materials

❓ Frequently Asked Questions

How do I choose the right length for my aluminium countersunk screw?

For countersunk screws, the listed length is the total length including the head. Measure the full depth of the countersunk hole plus the material thickness you need to fasten. For example, an M3 x 10mm screw is typically used for panels up to 8–10mm thick. When in doubt, choose a length that allows the head to sit flush or just below the surface.

What is the tensile strength of 6063 aluminium screws?

6063 aluminium alloy generally has a tensile strength of around 145–186 MPa (21,000–27,000 psi) depending on temper. These screws are suitable for light-to-medium duty fastening in aluminium frames, electronics enclosures, and non-structural assemblies. For high-load structural applications, contact us to confirm suitability.

Are these aluminium screws suitable for outdoor or marine use?

6063 aluminium has good natural corrosion resistance due to its oxide layer, making it generally suitable for outdoor environments. However, in highly corrosive marine or salt-spray environments, additional anodizing or protective coating is recommended. Contact us to confirm if your specific application requires treated fasteners.

What thread standard do these screws use — are they compatible with my tapped holes?

These screws follow the ISO metric thread standard (DIN 7991 specification), with coarse pitch threads. M2 through M8 sizes are compatible with standard metric tapped holes and nuts. They are not compatible with UNC/UNF inch-standard threads. If your project uses inch threads, contact us before ordering.

What hex key (Allen wrench) size do I need for each screw size?

The required hex key size varies by screw diameter: M2 uses a 1.5mm hex key, M2.5 uses 2mm, M3 uses 2.5mm, M4 uses 3mm, M5 uses 4mm, M6 uses 5mm, and M8 uses 6mm. Always use a well-fitting key to avoid stripping the socket, especially in softer aluminium.

Can I use these screws with aluminium, plastic, or carbon fiber panels?

Yes. These aluminium countersunk screws are commonly used with aluminium extrusions, aluminium sheet, acrylic, polycarbonate, and carbon fiber composite panels. Using aluminium fasteners with aluminium substrates also eliminates galvanic corrosion risk. For plastic panels, pre-drilling and using the correct tap size is recommended.

What is the head angle, and will it fit standard countersunk holes?

Per DIN 7991, the countersunk head angle is 90 degrees. This is the standard metric countersunk angle and is compatible with 90° countersunk drill bits and pre-drilled countersunk holes in most aluminium and plastic components. If your application uses an 82° countersink (common in inch-standard tooling), the head will not sit flush — contact us to confirm.

Are aluminium screws safe to use in high-vibration applications?

Aluminium screws are softer than steel and generally not recommended for high-vibration structural applications without thread-locking compound or locking inserts. For moderate vibration environments such as electronics enclosures or RC frames, they typically perform well. Always use a correctly sized hex key and avoid over-torquing to prevent thread stripping.

🛒 Select your screw size and quantity above, then add to cart.

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