Shoulder washers, also commonly referred to as insulating washers, feature a built-in flange or shoulder, which helps in serving two main purposes – providing spacing and electrical insulation. They are able to offer excellent corrosion protection, wear, and electrical conductivity. Therefore, they are routinely found across electronics, automotive, and machinery applications where it is important to prevent metal-to-metal contact, while also reducing vibration, and ensuring proper alignment of components.