HV washers, also known as hardened washers, are designed to provide a smooth bearing surface and distribute the load of a threaded fastener. These washers are heat-treated to achieve a higher level of hardness, making them ideal for use in applications where there is a need for greater strength and durability. HV washers come in a variety of sizes and materials to accommodate different requirements and are commonly used in construction, automotive, and industrial settings. Their ability to withstand high pressure and prevent bolt loosening makes them a crucial component in ensuring the stability and integrity of various structures and machinery.