din-6797-a-shajba参考标准资料

UDC621.882.54July 1988西Toothed lock washers6797ZahnscheibenSupersedes August 1971 edition.In keeping with current practice in standards published by the International Organization for Standardization (ISO),a comma has been used throughout as the decimal marker.Dimensions in mm1 Scope and field of applicationThe main purpose of toothed lock washers is to permit the flow of electric currentbetween components coated by varnish,anti-corrosive agents or similar materials,thebent ends of the washers piercing the coating when such components are joined.Forsuch applications,the effectiveness of toothed lock washers shall be verified in accord.ance with the relevant DIN VDE Standards.Where such washers are intended to keep fasteners of a low property class from work-ing loose,their effectiveness shall be checked for the application concerned.2 DimensionsDetails left unspecified are to be selected as appropriate.Type A,with external teethType J,with internal teethd2d?h≥251Continued on pages 2 to 4187