A washer is a thin steel plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener i.e. Hex Bolts, Hex Nuts & screws etc. Srons Engineers are the largest manufacturers, suppliers and exporters of all types of Plain Washers / Flat Washers / DIN 125 Washer / DIN 126 Washers in India.