Standard:DIN6916
Description:
The DIN 6916 washer, also known as a hardened steel washer, is available in different finishes, including plain and Dacromet coatings. Let's look at each of these options:
1.Plain Finish: The plain finish refers to an uncoated washer. It does not have any additional protective coating or treatment on its surface. Plain finish washers are typically used in applications where corrosion resistance is not a significant concern. They are suitable for indoor use or in environments where exposure to moisture or corrosive substances is minimal.
2.Dacromet Coating: Dacromet is a type of coating that provides excellent corrosion resistance. It is a thin, chromate-based coating that is applied to the surface of the washer. Dacromet-coated washers are highly resistant to rust and can withstand exposure to moisture, chemicals, and harsh environmental conditions. They are often used in outdoor applications, such as construction, marine, or automotive industries, where corrosion protection is crucial.
The choice between the plain finish and Dacromet coating depends on the specific requirements of your application. If you anticipate exposure to moisture, chemicals, or corrosive substances, Dacromet-coated washers would be recommended. However, if corrosion resistance is not a major concern, plain finish washers can be suitable.
It's important to note that regardless of the finish, DIN 6916 washers in the M12 to M36 size range are made from hardened steel and provide high-strength and load-bearing capabilities. The washers' primary function is to distribute the load and ensure even pressure distribution when securing bolts or nuts in structural or heavy-duty applications.
| Material | 45#/40CR |
| Size | M12-M36 |
| 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 (nominal size) |
Thickness (max) |
Thickness (min) |
Inside chamfer (min) |
Inside chamfer (max) |
External chamfer |
|---|---|---|---|---|---|---|---|---|---|---|
| M12 | 13 | 13.27 | 24 | 23.48 | 3 | 3.3 | 2.7 | 1.6 | 1.9 | 0.5 |
| M16 | 17 | 17.27 | 30 | 29.48 | 4 | 4.3 | 3.7 | 1.6 | 1.9 | 1 |
| M20 | 21 | 21.33 | 37 | 36.38 | 4 | 4.3 | 3.7 | 2 | 2.5 | 1 |
| M22 | 23 | 23.33 | 39 | 38.38 | 4 | 4.3 | 3.7 | 2 | 2.5 | 1 |
| M24 | 25 | 25.33 | 44 | 43.38 | 4 | 4.3 | 3.7 | 2 | 2.5 | 1 |
| M27 | 28 | 28.52 | 50 | 49 | 5 | 5.6 | 4.4 | 2.5 | 3 | 1 |
| M30 | 31 | 31.62 |
56 |
54.8 | 5 | 5.6 | 4.4 | 2.5 | 3 | 1 |
|
M36 |
37 | 37.62 | 66 | 64.8 | 6 | 6.6 | 5.4 | 3 | 3.5 | 1.5 |
Products pictures for Flat washers
