Aluminium Metric Washers Form A DIN-125A (Pack of 10)
Aluminium Metric Washers Form A DIN-125A (Pack of 10) - M5 is backordered and will ship as soon as it is back in stock.
The Metric Form A DIN-125A Aluminium Flat Washers deliver excellent load distribution in a highly corrosion-resistant, ultra-lightweight format. Supplied in convenient packs of 10, these non-magnetic washers are ideal for weight-critical engineering, automotive customisation, and applications requiring a softer metal to protect delicate mating surfaces.
Pickup currently unavailable at Bridgwater, Somerset
Form A (DIN 125A) Washer Size Chart
| Nominal Size | Internal Diameter (d1 min) [mm] | External Diameter (d2 max) [mm] | Thickness (s) [mm] |
|---|---|---|---|
| M2 | 2.2 | 5.0 | 0.3 |
| M2.5 | 2.7 | 6.0 | 0.5 |
| M3 | 3.2 | 7.0 | 0.5 |
| M3.5 | 3.7 | 8.0 | 0.5 |
| M4 | 4.3 | 9.0 | 0.8 |
| M5 | 5.3 | 10.0 | 1.0 |
| M6 | 6.4 | 12.0 | 1.6 |
| M7 | 7.4 | 14.0 | 1.6 |
| M8 | 8.4 | 16.0 | 1.6 |
| M10 | 10.5 | 20.0 | 2.0 |
| M12 | 13.0 | 24.0 | 2.5 |
| M14 | 15.0 | 28.0 | 2.5 |
| M16 | 17.0 | 30.0 | 3.0 |
| M18 | 19.0 | 34.0 | 3.0 |
| M20 | 21.0 | 37.0 | 3.0 |
| M22 | 23.0 | 39.0 | 3.0 |
| M24 | 25.0 | 44.0 | 4.0 |
| M27 | 28.0 | 50.0 | 4.0 |
| M30 | 31.0 | 56.0 | 4.0 |
| M33 | 34.0 | 60.0 | 5.0 |
| M36 | 37.0 | 66.0 | 5.0 |
| M39 | 40.0 | 72.0 | 6.0 |
| M42 | 43.0 | 78.0 | 7.0 |
Aluminium Metric Washers Form A DIN-125A (Pack of 10) - M5 is backordered and will ship as soon as it is back in stock.
Description
Description
Ultra-Lightweight Performance
Aluminium is roughly one-third the weight of steel. This gives you the distinct advantage of reducing overall assembly weight without sacrificing essential load distribution, making it the go-to choice for motorsport, aerospace, and lightweight robotics where every gram counts.
Soft Surface Protection
Driving hard steel washers into soft plastics, carbon fibre, or finished alloys can cause scoring, cracking, and surface damage. Aluminium is naturally softer, allowing it to act as a protective buffer that prevents damage to delicate or highly finished substrates during tightening.
Natural Corrosion Resistance
Unlike bare mild steel, aluminium naturally forms a protective oxide layer when exposed to air. This provides excellent intrinsic resistance to atmospheric corrosion and moisture, ensuring your fixings remain clean and functional without the need for additional plating or heavy chemical treatments.
Standardized Form A Precision
Precision builds require exact tolerances. Manufactured to strict DIN-125A specifications, these metric washers offer a consistent outer diameter and thickness. This guarantees a seamless fit with metric machine screws and bolts, ensuring uniform load distribution across your delicate assemblies.
Key Features
- Manufactured from high-quality, lightweight aluminium.
- Conforms strictly to DIN-125A Form A metric specifications.
- Naturally corrosion-resistant and completely non-magnetic.
- Softer composition protects delicate mating surfaces.
- Provides excellent thermal and electrical conductivity.
- Supplied in a handy, project-ready pack of 10 washers.
Specifications
Specifications
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Washer Form
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Material
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Finish
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Colour
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What's in the box?
What's in the box?
Ultra-lightweight design.
Soft material protection.
Frequently Asked Questions
Can I use aluminium washers with steel bolts?
Can I use aluminium washers with steel bolts?
While possible in dry environments, mixing aluminium with steel or stainless steel in the presence of moisture can cause galvanic corrosion, which degrades the aluminium rapidly. It is best practice to pair them with aluminium, nylon, or suitably coated fasteners in damp conditions.
Are these as strong as standard steel washers?
Are these as strong as standard steel washers?
No. Aluminium is significantly softer and has a lower tensile strength than steel. They are strictly designed for weight-saving and surface protection, not for heavy structural load-bearing applications. Overtightening can cause the washer to deform or crush.
Do these washers rust?
Do these washers rust?
Aluminium does not rust like steel because it contains no iron. It naturally oxidizes to form a dull grey, protective layer that prevents further corrosion, making it highly durable in standard atmospheric conditions.
Shipping
What countries do you ship to?
What countries do you ship to?
We currently only ship to the UK. To enquire about shipping to a different destination, please contact us.
How long will it take to receive my order?
How long will it take to receive my order?
Shipping normally takes 1 - 2 days. Orders placed before 2:00pm will be shipped same day. Orders placed after 2:00pm on Fridays will be shipped the following Monday.
