Square Plate Flat Washers

The material selection of the Square Plate Flat Washers directly affects its application performance and environmental adaptability. You can choose the following materials based on the actual working conditions:

（1）Carbon Steel

High strength, low cost, suitable for general industrial environments, and can be used in conjunction with 4.8 to 12.9 grade high-strength bolts.

It is recommended to perform anti-rust treatment on the surface, such as galvanizing or hot-dip galvanizing.

Mainly used for steel structure connections, mechanical bases, general industrial fastening, and wooden structure buildings.

（2）Stainless Steel

It has excellent corrosion resistance and is suitable for humid, outdoor or corrosive environments, with a wide temperature range.

The surface is usually plain, electroplated or treated with passivation.

Square Plate Flat Washers are used in food processing equipment, cleaning workshops, chemical pipelines, outdoor facilities and marine environments.

（3）Brass

It has excellent electrical conductivity, outstanding corrosion resistance, no magnetism and no sparks, and a decorative appearance. It is commonly used in electrical connections, shipbuilding and decorative hardware assembly.

（4）Aluminum

It is lightweight and has certain corrosion resistance. Aluminum Square Plate Flat Washers are often used in fields such as aerospace and electronic equipment.

（5）Copper

Excellent electrical and thermal conductivity, along with good ductility. It is commonly used in sealing gaskets, electronic components, and conductive connections for new energy vehicles.

（6）Alloy Steel

After heat treatment, it has extremely high strength and is suitable for extreme heavy-duty working conditions such as in mining equipment and heavy construction machinery.

FAQ

（1）Is there a Square Plate Flat Washers made of spring steel?

Usually not. The design purpose of the square plate type gasket is to be sturdy, not elastic.

（2）Is the carbon steel square washer strong enough for outdoor use?

The basic carbon steel is quite sturdy, but it tends to rust outdoors. You need to apply hot-dip galvanizing or Dacromet coating on the surface to achieve good outdoor corrosion resistance.

（3）Do you offer square washers made of corrosion-resistant alloys?

Yes, for high corrosive environments, we can produce them using special alloys according to the customer's requirements.

（4）Are there Square Plate Flat Washers made of brass or copper? And for what purposes are they used?

Sure. Bronze is used for decorative applications, in low-friction environments or environments without sparks. Copper is used for electrical grounding and heat conduction.