Aluminium Fasteners are lightweight fastening components manufactured from aluminium and aluminium alloys for applications requiring low weight, corrosion resistance, non-magnetic properties and good strength-to-weight performance. They are available as aluminium bolts and nuts, screws, stud bolts, threaded rods, heavy hex head bolts and socket head cap screws. Common aluminium alloys include 5052, 6061 and 7075, with the appropriate alloy and temper selected according to strength, corrosion resistance and application requirements.
We supply aluminium fasteners in different sizes, thread configurations, alloy grades and finishes for industrial, marine, electrical, architectural and engineering applications.
What Are Aluminium Fasteners?
Aluminium fasteners are mechanical fastening components manufactured from aluminium or aluminium alloys. They are used to join, secure and assemble components while keeping the overall weight of the assembly low.
Compared with conventional steel fasteners, aluminium offers a much lower density. Common aluminium alloys used in engineering applications have densities around 2.6–2.8 g/cm³, depending on the alloy. For example, 6061 is around 2.7 g/cm³ and 7075 around 2.8 g/cm³.
This makes aluminium useful for applications where weight reduction is an important design consideration.
The final fastener selection should consider alloy, temper, dimensions, thread design, tightening requirements, operating temperature and environmental exposure.
Table of Contents
- ➤ What Are Aluminium Fasteners?
- ➤ Types of Aluminium Fasteners
- ➤ Aluminium Fasteners Specifications Chart
- ➤ Aluminium Fastener Material Grades
- ➤ Chemical Composition of Aluminium Fasteners
- ➤ Mechanical Properties of Aluminium Fasteners
- ➤ Aluminium Fasteners Weight Chart
- ➤ Aluminium Fasteners Equivalent Grades Chart
- ➤ Anodized Aluminium Fasteners
- ➤ High Strength Aluminium Fasteners
- ➤ Marine Grade Corrosion Resistant Aluminium Screws
- ➤ Aluminium Fasteners Applications
- ➤ Aluminium Fasteners Manufacturer and Supplier
Types of Aluminium Fasteners
We offer different aluminium fastening configurations for industrial and engineering applications.
| Aluminium Fastener Type | Typical Use |
|---|---|
| Aluminium Bolts and Nuts | General machinery and equipment assembly |
| Aluminium Hex Bolts | General structural and mechanical fastening |
| Aluminium Heavy Hex Head Bolts | Assemblies requiring a larger bearing/wrenching surface |
| Aluminium Stud Bolts | Flanged joints and equipment assemblies |
| Aluminium Threaded Rods | Hanging, mounting and threaded assemblies |
| Aluminium Socket Head Cap Screws | Compact machinery and precision assemblies |
| Aluminium Machine Screws | Panels, enclosures and equipment |
| Marine Grade Aluminium Screws | Marine and outdoor applications |
| Anodized Aluminium Fasteners | Applications requiring improved surface finish and durability |
| Aluminium Washers | Load distribution and component protection |
The fastener type can be selected according to the joint design, available installation space and required mechanical performance.
Aluminium Fasteners Specifications Chart
| Specification | Aluminium Fasteners Details |
|---|---|
| Material | Aluminium and aluminium alloys |
| Common Alloys | 5052, 6061, 7075 and other grades as specified |
| Fastener Types | Bolts, nuts, screws, studs, threaded rods, washers |
| Head Types | Hex, heavy hex, socket head, pan, countersunk and other designs |
| Thread | Metric, UNC, UNF and other threads as specified |
| Finish | Mill finish, anodized and special finishes |
| Manufacturing | Machined, cold formed or produced according to specified product requirements |
| Size | Metric and inch sizes |
| Application | Industrial, marine, electrical, architectural, automotive and engineering |
| Inspection | Dimensional, material and other inspection requirements as agreed |
| Documentation | MTC/inspection documentation when specified |
| Customization | Non-standard sizes and configurations can be discussed |
Exact dimensions and tolerances should be confirmed against the applicable product or fastener standard before production.
Aluminium Fastener Material Grades
The alloy has a major influence on the performance of an aluminium fastener.
Aluminium 5052
5052 is an aluminium-magnesium alloy known for useful corrosion resistance and formability. ASTM B211 lists magnesium at 2.2–2.8% for 5052, with aluminium as the balance.
It can be considered for applications where corrosion resistance and fabrication characteristics are important.
Aluminium 6061
6061 is one of the most widely used engineering aluminium alloys. It contains magnesium and silicon as its primary alloying elements and offers a practical combination of strength, corrosion resistance and machinability.
6061-T6 is commonly referenced when higher strength is required. Typical published values for 6061-T6 include tensile strength around 310 MPa and yield strength around 276 MPa, although actual fastener values depend on the product form and specification.
Aluminium 7075
7075 is a high-strength aluminium-zinc alloy. It is selected when strength-to-weight performance is more important than the corrosion resistance and weldability advantages associated with 6061.
Typical 7075-T6 values are around 572 MPa tensile strength and 503 MPa yield strength for common bar/plate references.
Detailed specification pages are available for each aluminium fastener grade we supply:
- Aluminium 2014 Fasteners
- Aluminium 2024 Fasteners
- Aluminium 5052 Fasteners
- Aluminium 5083 Fasteners
- Aluminium 6061 Fasteners
- Aluminium 6063 Fasteners
- Aluminium 6082 Fasteners
- Aluminium 7075 Fasteners
Chemical Composition of Aluminium Fasteners
| Element | 5052 (%) | 6061 (%) | 7075 (%) |
|---|---|---|---|
| Aluminium | Balance | Balance | Balance |
| Silicon | ≤ 0.25 | 0.40–0.80 | ≤ 0.40 |
| Iron | ≤ 0.40 | ≤ 0.70 | ≤ 0.50 |
| Copper | ≤ 0.10 | 0.15–0.40 | 1.20–2.00 |
| Manganese | ≤ 0.10 | ≤ 0.15 | ≤ 0.30 |
| Magnesium | 2.20–2.80 | 0.80–1.20 | 2.10–2.90 |
| Chromium | 0.15–0.35 | 0.04–0.35 | 0.18–0.28 |
| Zinc | ≤ 0.10 | ≤ 0.25 | 5.10–6.10 |
Mechanical Properties of Aluminium Fasteners
| Property | 6061-T6 | 7075-T6 |
|---|---|---|
| Tensile Strength | ~310 MPa | ~572 MPa |
| Yield Strength | ~276 MPa | ~503 MPa |
| Elongation | ~12% | ~11% |
| Density | ~2.70 g/cm³ | ~2.81 g/cm³ |
| Elastic Modulus | ~69 GPa | ~71.7 GPa |
| Hardness | ~95 HB | ~150 HB |
| General Corrosion Resistance | Good | Moderate |
| Machinability | Excellent/Good | Good |
| Weldability | Good | Poor |
Aluminium Fasteners Weight Chart
| Fastener Size | Approx. Length | Indicative Weight* |
|---|---|---|
| M6 | 30 mm | ~2–3 g |
| M8 | 40 mm | ~5–7 g |
| M10 | 50 mm | ~10–13 g |
| M12 | 60 mm | ~18–23 g |
| M14 | 70 mm | ~28–35 g |
| M16 | 80 mm | ~40–50 g |
| M20 | 100 mm | ~75–90 g |
| M24 | 120 mm | ~125–150 g |
| M30 | 150 mm | ~240–280 g |
Aluminium Fasteners Equivalent Grades Chart
| Aluminium Alloy | UNS | Common Description | Typical Selection |
|---|---|---|---|
| 5052 | A95052 | Aluminium-Magnesium Alloy | Corrosion resistance and formability |
| 6061 | A96061 | Aluminium-Magnesium-Silicon Alloy | General engineering and structural applications |
| 7075 | A97075 | Aluminium-Zinc Alloy | High-strength lightweight applications |
| 6061-T6 | A96061 | Heat-treated 6061 | Higher-strength engineering applications |
| 7075-T6 | A97075 | Heat-treated 7075 | High-strength applications |
ASTM B211 confirms the UNS designations associated with these aluminium alloys, including A95052, A96061 and A97075.
Anodized Aluminium Fasteners
Anodized aluminium fasteners have a controlled oxide layer produced through an electrochemical surface-treatment process.
Anodizing can improve surface hardness, wear resistance and finish consistency. It is particularly useful for architectural, electrical, outdoor and equipment applications.
6061 is often a practical choice when anodizing is important because it offers good anodizing characteristics. However, the final appearance and performance depend on alloy, temper and anodizing process.
High Strength Aluminium Fasteners
High Strength Aluminium Fasteners are designed for applications where weight reduction must be combined with higher mechanical performance.
7075 is a common choice for high-strength aluminium components. Its tensile and yield strengths are substantially higher than typical 6061-T6 reference values.
However, aluminium fasteners should not simply replace steel fasteners based on tensile strength alone. Joint preload, thread stripping, bearing stress, temperature, corrosion and galvanic compatibility should all be evaluated.
Marine Grade Corrosion Resistant Aluminium Screws
Marine Grade Corrosion Resistant Aluminium Screws can be used where low weight and corrosion resistance are required in outdoor or marine-related assemblies.
Aluminium naturally develops a protective oxide layer, but marine environments require additional consideration. Direct contact between aluminium and dissimilar metals can create galvanic corrosion under suitable electrolyte conditions.
For marine assemblies, we recommend considering:
- Compatible aluminium alloy
- Surface finish
- Galvanic isolation
- Environmental exposure
- Washer and mating-material selection
- Joint design
- Required service life
Aluminium Fasteners Manufacturer and Supplier
As an Aluminium Fasteners Manufacturer and supplier, we provide fastening solutions according to application requirements, dimensions, alloy and finish.
Our range includes Aluminium Bolts and Nuts, Aluminium Stud Bolts & Threaded Rods, Aluminium Heavy Hex Head Bolts, Aluminium Socket Head Cap Screws, anodized fasteners and corrosion-resistant aluminium screws.
For every enquiry, we recommend providing the alloy, temper, fastener type, diameter, length, thread, quantity, finish and applicable standard. This allows us to identify the most suitable product for the application.
We also supply aluminium fasteners to customers looking for an Aluminum Fasteners Supplier in India for industrial and engineering requirements.
Need Aluminium Fasteners for Your Application?
Share your required alloy, size, thread, quantity and finish with us. We can help you identify
the appropriate aluminium bolts, nuts, screws, stud bolts or threaded rods for your
requirement.
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