940120
Washer
Volvo

A washer is used to distribute clamping force and reduce the risk of fastener loosening by increasing surface area under the head or nut. Depending on the application, it may also serve as a spacer, load distributor, or a sealing element. Heavy‑duty washers in truck applications are designed to resist deformation under high torque, minimizing galling and providing stable retention across vibration cycles. Materials range from hardened steel to stainless variants, with some include serrations or bearing surfaces for improved grip. Correct washer selection supports long‑term integrity of assemblies such as brackets, flanges, and signature components. When inspecting fasteners, check washer condition for corrosion, cracks, or deformation, and replace to maintain proper load distribution. Source One Parts Center stocks a variety of washers to suit different torque requirements and mounting surfaces.