These custom bent steel zinc washers were manufactured for our specialty OEM manufacturer using mild steel ranging in thickness from 1.8-2.0MM - the edges of the bent washer are actually used to clamp down the assembly so the thickness had to be just right to allow the application of the needed force without flattening out.  The top level dimensions of the rectangular shape are 23.7 X 44.8MM with a +/-.5MM tolerance and the inside drilled hole measures 8.5MM in diameter.  The outside height of the component is set to 7.34MM.  A simple part but it took us 3 sets of samples and tooling variations to get it to perform exactly as required.