DIN_6907相关标准规范

UDC621.882.54:621.882.2December 1990Serrated lock washers with external teethDINfor screw and washer assemblies6907Facherscheiben,auBengezahnt,fur Kombi-SchraubenSupersedes December 1972 editionIn keeping with current practice in standards published by the International Organization for Standardization (ISO),a commahas been used throughout as the decimal marker.Dimensions in mm1 Scope and field of applicationSerrated lock washers as specified in this standard are intended for use with screw and washer assemblies as specified inDIN 6900 Part 4.Serrated lock washers are mainly designed to provide electric contact between components coated with var-nish,anti-corrosive agents or similar materials,by the tang ends of the washers piercing the coating when such componentsare joined.2 DimensionsDetails left unspecified are to be selected as appropriate.d回Φtdh=351Table.Nommin.deApproximate massmaxmax.minMinimum(7.85kg/dm.Forinalnom-nom-Nom-maxmin.numberper 1000 units.threadsizeinalinalinalof teethsize4)sizesize2T12in kgsize2252,252.355.55,320.40.440,360,290.06M2.52,72.72865.82040.440.360,290.07M33,23,233216.780.50.540.460,24100,12M3.53.63.63,7287.780.50.540.460,24110,16M44.554.554.6798.780.60.650.550.24022M55.55,55.621110,73070,750.650.24120,39M67.47.47.551413,730.80.850,750,3140.70M89,39,39.451817,730.90.950.850,3161.32M10Continued on pages 2 and 3205