A washer is a hole (usually circular) in a piece of material

A washer is a hole (usually circular) in a piece of material that is usually used to distribute the load on a threaded fastener. The washer is located between the connector and the nut, usually a flat metal ring. Other uses include spacers, springs (Belville washers, wave washers), wear pads, pre-display devices, locking devices. Rubber gaskets are also used in faucets (valves) to shut off the flow of liquids or gases. 

Pride is deeply involved in the hardware manufacturing industry. We export a large number of hardware parts, fasteners, pipe products, and telescopic products to various regions of the world every month.

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