Selecting the Best Washer

Buyer’s Guide on Selecting the Best Washer

When it comes to manufacturing applications, having an accurate fastening and assembly processes are crucial. This will guarantee that the right parts are properly utilised for building purposes. Speaking of fastening, it includes washers. Washers are multipurpose fasteners. It has two functions – it spreads the pressure equally over a surface without destroying and it reduces the likelihood of loosening.

There are many types of washers provided by the Superior Washer Corp namely plain washers (flat washer, fender washer, spherical washer, anchor plate and torque washer), spring washers (belleville washer, curved disc spring, wave washer, and split washer) and locking washers (spring lock washer, toothed lock washer and tab washer).

Superior Washer Corp

You will have many selections but you need to choose the optimum type for your project. Remember that if you fail to select the right washer, it can lead to machine downtime and eventually lost of production costs. When choosing, you have to think about washer materials. The material used will be stamped into the washer. It can come in two different materials – metallic and non-metallic.

Metallic materials include brass, aluminum, copper, bronze, spring steel, stainless steel, hardened steel, and titanium. Non-metallic materials include asbestos, leather, felt, nylon, polyester, rubber, PVC, polycarbonate, polyethylene and polypropylene. After the materials, you should consider the washer styles. There are six washer styles that include flat, shoulder, tab, lock, countersunk, and spring. Aside from that, there are also specialty styles like cylindrically curved, wave, belleville, shim stacks, and fender. In addition to this, here are other guidelines you should consider when selecting the best washer:


Tolerance should be specified according to the industry standards. The rule of thumb is the tighter the tolerance the more expensive the washer.


Compatibility means existing together without issue or conflict. In the case of washers, it is important that you check the compatibility through physical dimensions, load and heat treatment.


The thickness should be based on particular application requirements. It should be within industry standards.


According to the industry standard, the flatness should not be more than 0.010 Total Indicator Reading per inch.

Temper, hardness, and heat-treating

If the hardness is not precise, the temper does not need to be indicated. However, if the hardness is indicated, you should make sure that the washers comply with the different standard.


Finish refers to the coating to enhance the appearance of the washer. It is also considered for its non-corrosive properties.

With the things mentioned above, you will have better understanding and selection of washers. If you need to know more, you have to do your own research. Before you indulge in fastening business, make sure that you understand everything. The price will depend on the type, materials, size and other features.