The steel washers are the thin plate (typically disk-shaped) with one or several holes (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a screw or nut. Other uses are as a spacer, spring (belleville washer, wave washer), wear pad, preload indicating device, locking device, and to reduce vibration (rubber washer). Washers usually have an outer diameter (OD) about twice larger than their inner diameter (ID). Ever Hardware provides the custom made steel washers and customizable packaging.
Washers are usually metal or plastic. High-quality bolted joints require hardened steel washers to prevent the loss of pre-load due to Brinelling after the torque is applied.
Rubber or fiber gaskets used in taps (or faucets, or valves) to stop the flow of water are sometimes referred to colloquially as washers; but, while they may look similar, washers and gaskets are usually designed for different functions and made differently.
Washers are also important for preventing galvanic corrosion, particularly by insulating steel screws from aluminum surfaces.
Galvanization, or galvanisation, (or galvanizing as it is most commonly called in that industry), is the process of applying a protective zinc coating to steel or iron, to prevent steel washers from rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc. Galvanizing protects in three ways:
It forms a coating of zinc which, when intact, prevents corrosive substances from reaching the underlying steel or iron.
The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.
The zinc protects its base metal by corroding before iron. For better results, application of chromates over zinc is also seen as an industrial trend.
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Category | Steel Washers |
---|---|
Finish | Electro-Plating |
Thread type | Metric/Imperial/According to Request |
Material | Stainless Steel/Carbon Steel/Aluminum/Brass/Copper, etc. |
Brand | Ever Hardware |
Place of origin | China Mainland |
Size | Customized as required |
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What Client’s Say
Those look great! All the specs look perfect.
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Thank you very much.
The bolts are perfect and they’re fits good.
The nut fits perfect on our M2.5 screw part.
Height is also ok.
I tested the bolts this morning and they are perfect. Thank you so much.
We are professional on precision steel washers and custom-made fasteners services!
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