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A4 Stainless Steel Form A Washers are precision-manufactured flat washers designed to distribute the load of threaded fasteners, helping to protect the fixing surface and provide a secure, reliable connection. Manufactured to DIN 125A, they are suitable for use with bolts, set screws, machine screws, and threaded rods across a wide range of engineering, construction, and marine applications.
Manufactured from A4 stainless steel (316 grade), these washers provide superior corrosion resistance, making them ideal for marine, coastal, chemical, and other harsh outdoor environments. Commonly used in marine engineering, fabrication, machinery, construction, and maintenance, they help prevent surface damage while improving load distribution and fastening performance.
Type: Form A Flat Washer
Quantity: Packs of 1 or 10
- Form A flat washers
- Manufactured to DIN 125A
- A4 stainless steel (316 grade) construction
- Superior corrosion resistance
- Ideal for marine and harsh outdoor environments
Size guide: DIN 125A dimensions for all sizes (tap to view) ▾
Nominal dimensions to DIN 125A (ISO 7089) for every size we stock in this range.
| Size | Inside Ø (d1) | Outside Ø (d2) | Thickness (h) |
|---|---|---|---|
| M1.6 | 1.7mm | 4mm | 0.3mm |
| M2 | 2.2mm | 5mm | 0.3mm |
| M2.5 | 2.7mm | 6mm | 0.5mm |
| M3 | 3.2mm | 7mm | 0.5mm |
| M3.5 | 3.7mm | 8mm | 0.5mm |
| M4 | 4.3mm | 9mm | 0.8mm |
| M5 | 5.3mm | 10mm | 1mm |
| M6 | 6.4mm | 12mm | 1.6mm |
| M8 | 8.4mm | 16mm | 1.6mm |
| M10 | 10.5mm | 20mm | 2mm |
| M12 | 13mm | 24mm | 2.5mm |
| M14 | 15mm | 28mm | 2.5mm |
| M16 | 17mm | 30mm | 3mm |
| M20 | 21mm | 37mm | 3mm |
| M24 | 25mm | 44mm | 4mm |
| M30 | 31mm | 56mm | 4mm |
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