Standard:DIN125A
Description:
The DIN 125A washer, also known as a flat steel washer, is a widely used washer in various industries and applications. It is designed to distribute the load of a threaded fastener, such as a bolt or a nut, and provide a smooth bearing surface. The DIN 125A washer conforms to the specifications outlined in the German Industrial Norm (DIN) 125A.
One particular variation of the DIN 125A washer is the version with a black oxide finish. The black oxide finish is a type of surface treatment that provides a dark, protective layer on the washer. This finish not only enhances the aesthetics of the washer but also offers some corrosion resistance.
The process of achieving a black oxide finish involves a chemical conversion of the washer's surface into magnetite (Fe3O4), which provides a durable and attractive black coating. The black oxide finish can help protect the washer from rusting and other forms of corrosion, making it suitable for applications in environments where moisture or exposure to harsh conditions is a concern.
DIN125 flat washer refers to the German standard DIN125-1990, which specifies the non-angular flat washer with product grade A, thread diameter 1.6 ~ 36MM, and hardness grade 140HV and 200HV.The DIN 125A washer with a black oxide finish is available in a size range from M3 to M100. This indicates that it is available in various diameters to accommodate different sizes of bolts or nuts.
| Material | 45#/40CR |
| Size | M3-M100 |
| Finish | Plain/black/ZINC/HDG/Dacromet/Mechanical Galvanized |
| Hardness | HV300/HRC35-45 |
| Marking | can be Customized |
| Application | Constrution/Wind turbines/railway line |
| Packing | Carton+ pallet; we can pack washers as your requirements |
| Terms | FOB+shanghai/ningbo |
| Delivery time | 30-70days |
|
Size |
Inner diameter(min) | Inner diameter(max) | Outside diameter(max) | Outside diameter(min) |
Nominal size |
Thickness (max) |
Thickness (min) |
|
3 |
3.2 | 3.38 | 7 | 6.64 | 0.5 | 0.55 | 0.45 |
| 3.5 | 3.7 | 3.88 | 8 | 7.64 | 0.5 | 0.55 | 0.45 |
| 4 | 4.3 | 4.48 | 9 | 8.64 | 0.8 | 0.9 |
0.7 |
| 5 | 5.3 | 5.48 | 10 | 9.64 | 1 | 1.1 | 0.9 |
| 6 | 6.4 | 6.62 | 12 | 11.57 | 1.6 | 1.8 | 1.4 |
| 7 | 7.4 | 7.62 | 14 | 13.57 | 1.6 | 1.8 | 1.4 |
| 8 | 8.4 | 8.62 | 16 | 15.57 | 1.6 | 1.8 | 1.4 |
| 10 | 10.5 | 10.77 | 20 | 19.48 | 2 | 2.2 | 1.8 |
| 12 | 13 | 13.27 | 24 | 23.48 | 2.5 | 2.7 | 2.3 |
| 14 | 15 | 15.27 | 28 | 27.48 | 2.5 | 2.7 | 2.3 |
| 16 | 17 | 17.27 | 30 | 29.48 | 3 | 3.3 | 2.7 |
| 18 | 19 | 19.33 | 34 | 33.38 | 3 | 3.3 | 2.7 |
| 20 | 21 | 21.33 | 37 | 36.38 | 3 | 3.3 | 2.7 |
| 22 | 23 | 23.33 | 39 | 38.38 | 3 | 3.3 | 2.7 |
| 24 | 25 | 25.33 | 44 | 43.38 | 4 | 4.3 | 3.7 |
| 26 | 27 | 27.33 | 50 | 49.38 | 4 | 4.3 | 3.7 |
| 27 | 28 | 28.33 | 50 | 49.38 | 4 | 4.3 | 3.7 |
| 28 | 29 | 29.33 | 50 | 49.38 | 4 | 4.3 | 3.7 |
| 30 | 31 | 31.39 | 56 | 55.26 | 4 | 4.3 | 3.7 |
| 32 | 33 | 33.62 | 60 | 58.8 | 5 | 5.6 | 4.4 |
| 33 | 34 | 34.62 | 60 | 58.8 | 5 | 5.6 | 4.4 |
| 35 | 36 | 36.62 | 66 | 64.8 | 5 | 5.6 | 4.4 |
| 36 | 37 | 37.62 | 66 | 64.8 | 5 | 5.6 | 4.4 |
| 38 | 39 | 39.62 | 72 | 70.8 | 6 | 6.6 | 5.4 |
| 39 | 40 | 40.62 | 72 | 70.8 | 6 | 6.6 | 5.4 |
| 40 | 41 | 41.62 | 72 | 70.8 | 6 | 6.6 | 5.4 |
| 42 | 43 | 43.62 | 78 | 76.8 | 7 | 8 | 6 |
| 45 | 46 | 46.62 | 85 | 83.6 | 7 | 8 | 6 |
| 48 | 50 | 50.62 | 92 | 90.6 | 8 | 9 | 7 |
| 50 | 52 | 52.74 | 92 | 90.6 | 8 | 9 | 7 |
| 52 | 54 | 54.74 | 98 | 96.6 | 8 | 9 | 7 |
| 55 | 57 | 57.74 | 105 | 103.6 | 9 | 10 | 8 |
| 56 | 58 | 58.74 | 105 | 103.6 | 9 | 10 | 8 |
| 58 | 60 | 60.74 | 110 | 108.6 | 9 | 10 | 8 |
| 60 | 62 | 62.74 | 110 | 108.6 | 9 | 10 | 8 |
| 64 | 66 | 66.74 | 115 | 113.6 | 9 | 10 | 8 |
| 68 | 70 | 70.74 | 120 | 118.6 | 10 | 11 | 9 |
| 72 | 74 | 74.74 | 125 | 123.4 | 10 | 11 | 9 |
| 76 | 78 | 78.74 | 135 | 133.4 | 10 | 11 | 9 |
| 80 | 82 | 82.87 | 140 | 138.4 | 12 | 13.2 | 10.8 |
| 85 | 87 | 87.87 | 145 | 143.4 | 12 | 13.2 | 10.8 |
| 90 | 93 | 93.87 | 160 | 158.4 | 12 | 13.2 | 10.8 |
| 95 | 98 | 98.87 | 165 | 163.4 | 12 | 13.2 | 10.8 |
Products pictures for Flat washers
