Standard:F436M
Description:
F436M washers are metric-sized hardened steel washers that are commonly used in structural applications. They are specified by the ASTM F436M standard, which sets the requirements for the physical and mechanical properties of these washers. The size range you mentioned, M12 to M100, refers to the metric thread size of the bolts or screws they are designed to work with.
When specified with a "Hot Dip Galvanized" (HDG) finish, F436M washers have undergone a process called hot-dip galvanizing. Hot-dip galvanizing is a method of coating steel with a layer of zinc to provide corrosion protection. The steel washers are immersed in a bath of molten zinc, allowing the zinc to bond with the surface of the washers, forming a thick and durable coating.
HDG-coated F436M washers offer excellent corrosion resistance, making them suitable for outdoor or highly corrosive environments. The thick layer of zinc acts as a barrier, protecting the washers from rust and corrosion. Hot-dip galvanizing provides a long-lasting and robust finish, making it a popular choice for applications where corrosion resistance is critical, such as in construction, infrastructure, and marine projects.
It's important to note that F436M washers with a hot-dip galvanized finish should be used in conjunction with other components that also have a compatible corrosion protection, such as hot-dip galvanized bolts or screws. Mixing different types of coatings or finishes can lead to galvanic corrosion.
| Material | 45#/40CR |
| Size | M12-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(max) | Inner diameter(min) | Outside diameter(max) | Outside diameter(min) |
Thickness (max) |
Thickness (min) |
|---|---|---|---|---|---|---|
| M12 | 14.4 | 14.0 | 27.0 | 25.7 | 4.6 | 3.1 |
| M14 | 16.4 | 16.0 | 30.0 | 28.7 | 4.6 | 3.1 |
| M16 | 18.4 | 18.0 | 34.0 | 32.4 | 4.6 | 3.1 |
| M20 | 22.5 | 22.0 | 42.0 | 40.4 | 4.6 | 3.1 |
| M22 | 24.5 | 24.0 | 44.0 | 42.4 | 4.6 | 3.4 |
| M24 | 26.5 | 26.0 | 50.5 | 48.4 | 4.6 | 3.4 |
| M27 | 30.5 | 30.0 | 56.0 | 54.1 | 4.6 | 3.4 |
| M30 | 33.6 | 33.0 | 60.0 | 58.1 | 4.6 | 3.4 |
| M36 | 39.6 | 39.0 | 72.0 | 70.1 | 4.6 | 3.4 |
| M42 | 45.6 | 45.0 | 84.0 | 81.8 | 7.2 | 4.6 |
| M48 | 52.7 | 52.0 | 95.0 | 92.8 | 7.2 | 4.6 |
| M56 | 62.7 | 62.0 | 107.0 | 104.8 | 8.7 | 6.1 |
| M64 | 70.7 | 70.0 | 118.0 | 115.8 | 8.7 | 6.1 |
| M72 | 78.7 | 78.0 | 130.0 | 127.5 | 8.7 | 6.1 |
| M80 | 86.9 | 86.0 | 142.0 | 139.5 | 8.7 | 6.1 |
| M90 | 96.9 | 96.0 | 159.0 | 156.5 | 8.7 | 6.1 |
| M100 | 107.9 | 107.0 | 176.0 | 173.5 | 8.7 | 6.1 |
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