Les and list, At work, we use several types of spring washers. Cylindrically curves spring washers are simply washers that have been bent essentially around a pipe and thus have a slight "C" shaped curve to them (emphasis on slight). A wave spring washer is simply that - a "washer" in the shape of a series of waves. In this case, there is not even one area on the spring that is flat. Usually there are two humps and two valleys although, I have seen some with three of each. There is another type that is essentially a flat washer that has been pressed over a cone and therefore has a cone type shape. Generally these types are for high loads. There are many different suppliers of these springs. In most cases, if you find a place that has one of these springs, they will have the others too. One general distributor that you should easily find the part you are looking for is McMaster-Carr. They have a web site and you should be able to locate a part number that will fit your application. As far as which of the above types of spring washers you will need for the wiper application, I cannot tell you. If you need any additional information on suppliers or anything else, contact me privately. Sean Howley VIN#2345 tsuyoi@xxxx > Windshield wipers call for a spring washer and a nut, I have two > ordinary wrought washers. DMC Houston does not list them, PJ Grady > doesn't have them, the two local hardware stores never heard of spring > washers or wavy washers. Rather than knocking on every door, does > anyone have a source? (I'm not really a purist but I do give everything > a shot).