DIN_925相关标准规范

UDC621.882.215.1.091.6.092.4September 1986Slotted countersunk head screws四with full dog point925Senkschrauben mit Schlitz und ZapfenSupersedes August 1972 edition.In 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 DimensionsEdge radiusedor flatR,6,3 for sizesup to M3R:16 for sizesexceeding M3a2 as specified inDIN 76 Part 1(2 P maximum).Thread size dM1,4M1.6M2M2,5M3P)030.350.40.450.5dmax nominal size2.633.84.75.6min.2.352.753.54.45.3dpmax.nominal size0.80.81.21.52min.0.7750.7751.1751.4751.975max0.840.961.21.51.65Nominal size030.40.50.60.8min0.360.460.560.660.86max.0.50.60.70.81rma×0.140.160.20.250.3min.0.280,32040.50.6ma关0.40.450.60.70.852对0.20.20.250.350.4Nominal sizeTolerance1.622,5js15(3)for and l2.4(5)6KNominal sizemin.max.0,60.60.85(0,8)0.81.05111.25(1.2)1.21.451.61.85222.252,52.52.75(3)33.25Lengths and /2 and intermediate lengths given in brackets should be avoided if possible.Slotted countersunk head screws are normally manufactured in the range indicated by stepped lines.1)P=pitch of thread (coarse pitch thread).Continued on pages 2 and 3179