Standard:DIN9021
Description:
The DIN 9021 washer, also known as a structural steel washer, is a type of washer that conforms to the DIN 9021 standard. These washers are commonly used in construction, engineering, and industrial applications where load distribution and protection of the connected surfaces are important.
The M6-M100 size range indicates that these washers are suitable for use with bolts or threaded fasteners ranging from M6 to M100 in diameter.
The DIN 9021 washers can be available with two main surface finish options: plain and Dacromet.
Plain washers refer to washers without any additional surface treatment. They are made of plain steel and do not have any specific coating or finish applied to them. Plain washers are suitable for applications where corrosion resistance is not a primary concern, or where additional measures are taken to protect against corrosion.
Dacromet is a high-performance coating that provides excellent corrosion resistance. It is a thin, organic coating applied through a dip-spin process. Dacromet coatings offer superior protection against rust and corrosion, even in harsh environments or exposure to chemicals. This makes them suitable for applications where long-term corrosion resistance is required.
The choice between plain and Dacromet finishes depends on the specific requirements of the application, including the level of corrosion resistance needed and the operating conditions the washer will be subjected to. Dacromet-coated DIN 9021 washers offer enhanced protection against corrosion and are often preferred in applications where durability and resistance to rust are critical factors.
| Material | 45#/40CR |
| Size | M6-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) |
Thickness (max) |
Nominal size |
Thickness (min) |
| 2.7 | 2.7 | 2.84 | 8 | 7.64 | 0.9 | 0.8 |
0.7 |
| 3.2 | 3.2 | 3.38 | 9 | 8.64 | 0.9 | 0.8 | 0.7 |
| 3.7 | 3.7 | 3.88 | 11 | 10.57 | 0.9 | 0.8 | 0.7 |
| 4.3 | 4.3 | 4.48 | 12 | 11.57 | 1.1 | 1 | 0.9 |
| 5.3 | 5.3 | 5.48 | 15 | 14.57 | 1.4 | 1.2 | 1 |
| 6.4 | 6.4 | 6.62 | 18 | 17.57 | 1.8 | 1.6 | 1.4 |
| 7.4 | 7.4 | 7.62 | 22 | 21.48 | 2.2 | 2 | 1.8 |
| 8.4 | 8.4 | 8.62 | 24 | 23.48 | 2.2 | 2 | 1.8 |
| 10.5 | 10.5 | 10.77 | 30 | 29.48 | 2.7 | 2.5 | 2.3 |
| 13 | 13 | 13.27 | 37 | 36.38 | 3.3 | 3 | 2.7 |
| 15 | 15 | 15.27 | 44 | 43.38 | 3.3 | 3 | 2.7 |
| 17 | 17 | 17.27 | 50 | 49.38 | 3.3 | 3 | 2.7 |
| 20 | 20 | 20.52 | 56 | 54.1 | 4.6 | 4 | 3.4 |
| 22 | 22 | 22.52 | 60 | 58.1 | 4.6 | 4 | 3.4 |
| 26 | 26 | 26.84 | 72 | 70.1 | 6 | 5 | 4 |
| 33 | 33 | 34 | 92 | 89.8 | 7 | 6 | 5 |
| 39 | 39 | 40 | 110 | 107.8 | 9.2 | 8 | 6.8 |
Products pictures for Flat washers
