Standard:DIN9021
Description:
The DIN 9021 washer, also known as a hardened steel washer, is another type of washer that conforms to the German Industrial Standard (DIN) 9021 specification. It is used in various applications to provide load distribution and prevent damage to the surface being fastened.
Here are some details about DIN 9021 washers:
1.Material: DIN 9021 washers are made from hardened steel, which offers high strength and durability.
2.Sizes: These washers are available in a wide range of sizes, starting from M6 and going up to M100. The "M" denotes the metric thread size, and the number represents the thread diameter in millimeters.
3.Coatings: DIN 9021 washers can be found with different surface coatings, including zinc plating and hot-dip galvanizing (HDG).
a) Zinc Plated: Zinc plating involves applying a thin layer of zinc to the surface of the washer. This coating provides some degree of corrosion resistance and helps protect the underlying steel from rusting. Zinc-plated washers are typically used in indoor or low-corrosion environments.
b) Hot-Dip Galvanized (HDG): HDG is a process in which the washer is fully immersed in a bath of molten zinc, resulting in a thicker and more durable zinc coating. HDG provides excellent corrosion resistance and is commonly used for outdoor applications or in environments with high levels of moisture, chemicals, or corrosive substances.
When selecting between zinc-plated and HDG-coated DIN 9021 washers, consider the specific requirements of your application, including the environment and expected exposure to corrosion-inducing factors. HDG-coated washers offer superior protection against rust and are generally recommended for outdoor or corrosive environments. Zinc-plated washers are suitable for indoor or less demanding applications.
| 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
