Nylon washers are commonly used in applications requiring electrical insulation, corrosion resistance, and vibration dampening. They are lightweight and offer a low-friction surface.
Square washers provide a larger surface area than standard round washers. They are ideal for heavy-duty structural applications, especially with timber or channel sections, to distribute load and prevent pull-through.
Fender washers have a significantly larger outer diameter compared to their inner hole. They are designed to spread the clamping force over a wide area, making them perfect for fastening thin sheet metals, wood, and plastics.
Lock washers are engineered to create tension or grip between the fastener head and the mounting surface. This mechanical resistance prevents bolts and nuts from loosening due to vibration or thermal expansion.
Consider the environment (corrosion risk), load distribution requirements, and material compatibility. Stainless steel washers offer rust protection, while brass or nylon serve specific decorative or electrical isolating purposes.