washers, bi metal washers, fibre washers, sealing washers, speaker washers, aluminium washers, bush washers, copper marine gasket, copper washers lock washers cup washers. There are many different types of washers for a variety of applications. Lock washers are used to secure fasteners. Spring washers are a load bearing device that provides a preload between two surfaces. Other common types include flat washers, C-washers, D-shaped washers, countersunk or finishing washers, fender washers, SAE washers, torque washers, and shoulder washers. Fasteners would not be complete without washers in various metals and plastics