Standard:DIN6916
Description:
DIN 6916 washers, also known as heavy washers, are designed to provide increased bearing surface and load distribution when used with high-strength structural bolts. The parameters you mentioned, M12-M36, indicate that these washers are available in metric sizes ranging from M12 to M36.
Regarding the surface finish options for DIN 6916 washers, you have two choices: zinc plated or hot-dip galvanized (HDG).
1.Zinc plated: Zinc plating refers to a process where a layer of zinc is applied to the surface of the washers to provide corrosion resistance. This coating is typically applied through a process called electroplating. Zinc plated washers offer moderate corrosion resistance and are suitable for use in indoor or dry environments where exposure to moisture or corrosive elements is limited.
2.Hot-dip galvanized (HDG): HDG is a more robust and durable coating compared to zinc plating. In the hot-dip galvanizing process, the washers are immersed in a bath of molten zinc, which forms a thick layer of zinc coating on the surface. HDG washers provide excellent corrosion resistance and are commonly used in outdoor and harsh environments where exposure to moisture, chemicals, and corrosive elements is expected.
In summary, DIN 6916 heavy washers are available in metric sizes ranging from M12 to M36. They can be obtained with either a zinc plated finish, which provides moderate corrosion resistance, or a hot-dip galvanized (HDG) coating, which offers excellent corrosion resistance. The choice of finish depends on the specific application and the level of corrosion protection required.
| 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 |
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