Flat Washer Form A (DIN 125A) is a type of washer that conforms to the DIN 125A standard. The purpose of a washer is to provide a smooth surface for the nut or bolt to bear on, making it less likely to loosen due to an uneven fastening surface.
Frank's Fasteners provides Flat Washers in A2 Stainless Steel, A4 Stainless Steel, Brass, Zinc Plated Steel, Nylon 6.6 Polyamide, Aluminium, Steel.
Additional material and finishes can be sourced, don't hesitate to get in touch with us with your enquiry.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness |
|---|---|---|---|
| M1 | 1.1mm | 3.2mm | 0.3mm |
| M1.2 | 1.3mm | 3.8mm | 0.3mm |
| M1.4 | 1.5mm | 3.8mm | 0.3mm |
| M1.6 | 1.7mm | 4.0mm | 0.3mm |
| M2 | 2.2mm | 5.0mm | 0.3mm |
| M2.5 | 2.7mm | 6.0mm | 0.5mm |
| M3 | 3.2mm | 7.0mm | 0.5mm |
| M3.5 | 3.7mm | 8.0mm | 0.5mm |
| M4 | 4.3mm | 9.0mm | 0.8mm |
| M5 | 5.3mm | 10mm | 1.0mm |
| M6 | 6.4mm | 12mm | 1.6mm |
| M7 | 7.4mm | 14mm | 1.6mm |
| M8 | 8.4mm | 16mm | 1.6mm |
| M10 | 10.5mm | 20mm | 2.0mm |
| M11 | 12.0mm | 24mm | 2.5mm |
| M12 | 13mm | 24mm | 2.5mm |
| M14 | 15mm | 28mm | 2.5mm |
| M16 | 17mm | 30mm | 3.0mm |
| M18 | 19mm | 34mm | 3.0mm |
| M20 | 21mm | 37mm | 3.0mm |
| M22 | 23mm | 39mm | 3.0mm |
| M24 | 25mm | 44mm | 4.0mm |
| M27 | 28mm | 50mm | 4.0mm |
| M30 | 31mm | 56mm | 4.0mm |
| M33 | 34mm | 60mm | 5.0mm |
| M36 | 37mm | 66mm | 5.0mm |
| M39 | 40mm | 72mm | 6.0mm |
| M42 | 43mm | 78mm | 7.0mm |
| M45 | 46mm | 85mm | 7.0mm |
| M48 | 50mm | 92mm | 8.0mm |
| M52 | 54mm | 98mm | 8.0mm |
| M56 | 58mm | 105mm | 9.0mm |
| M60 | 62mm | 110mm | 9.0mm |
| M64 | 66mm | 115mm | 9.0mm |