Ī ring split at one point and bent into a helical shape. In Germany, they are sometimes used as lock washers but they are less effective than other choices. Wave washers, of comparable size, do not produce as much force as Belleville washers. Ī washer with a "wave" in the axial direction, which provides spring pressure when compressed. Unlike Belleville washers, they exert only light pressures. Similar to a Belleville, except the washer is curved in only one direction, therefore there are only four points of contact. The surface may be serrated, which will have improved locking capabilities. Spring and locking washers Name(s)īelleville washer, also called cupped spring washer or conical washerĪ washer with a slight conical shape, which provides an axial force when deformed. Teeth or prongs on the washer bite into the wood, preventing the bolt from spinning freely when a nut is being tightened. Used in woodworking in combination with a carriage bolt it has a square hole in the centre into which the carriage bolt square fits. Being visible, many anchor plates are made in a style that is decorative. Anchor plates are used on exterior walls of masonry buildings, for structural reinforcement. Ī large plate or washer connected to a tie rod or bolt. Part of a self-aligning nut it is a washer with one radiused surface, which is designed to be used in conjunction with a mating nut in order to allow for up to several degrees of misalignment between parts. They could be used for sealing small holes, rust spots or removed pipe connections in water tanks or large cooking vessels. This included two washers, a nut, and bolt, and a sealing washer of rubber, cork, or fibre sheet. In the UK, most industries refer to all large OD washers as penny washers, even when the OD is as much as twice the size of the old penny.Īn archaic form of this washer was sold as a "pot mender", usually in small quantities through a retail ironmonger. In the UK, the name originally comes from the size of the old British penny. They can also be used to make a connection to a hole that has been enlarged by rust or wear. These are commonly used to spread the load on thin sheet metal, and are named after their use on automobile fenders. įender washer (US), penny washer, mudguard washer, or "repair washer" (UK)Ī flat washer with a particularly large outer diameter in proportion to its central hole. Additionally, a plain washer may be used when the hole is a larger diameter than the fixing nut.
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