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1、公制外螺紋(6g)常用規(guī)格極限尺寸表(粗牙)直徑×螺距螺紋精度等級大徑中徑小徑螺胚直徑最大最小最大最小最大最小最大M3×0.56g2.9802.8742.6552.5802.4392.602.63M4×0.73.9783.8383.5233.4333.2203.473.50M5×0.84.9764.8264.4564.3614.1104.404.43M6×15.9745.7945.3245.2124.8915.265.29M8×1.257.9727.7607.1607.0426.6197.107.14M10×1.59.9689.7328.9948.8628.3448.928.96M12×1.
2、7511.96611.70110.82910.67910.07210.7510.79M14×213.96213.68212.66312.50311.79712.5712.62M16×215.96215.68214.66314.50313.79714.5714.62M18×2.517.95817.62316.33416.16415.25216.2416.29M20×2.519.95819.62318.33418.16417.25218.2418.29M22×2.521.95821.62320.33420.16419.25220.2420.29M24×323.95223.57722.00321.
3、80320.70421.8921.95M27×326.95226.57725.00324.80323.70424.8924.951.螺胚直徑指滾絲前的尺寸，數值為依經驗公式計算而得，在實踐中需驗證。公制外螺紋(6g)常用規(guī)格極限尺寸表(細牙)公稱直徑×螺距螺紋精度等級大徑中徑小徑螺胚直徑最大最小最大最小最大最小最大M3X0.356g2.9812.8962.7542.6872.6022.712.73M4X0.53.9803.8743.6553.5803.4393.603.63M5×0.54.9804.8744.6554.5804.4394.604.63M6×0.755.9785.8385.49
4、15.3915.1665.425.46M8×0.757.9787.8387.4917.3917.1667.427.46M8×17.9747.7947.3247.2126.8917.267.29M10×0.759.9789.8389.4919.3919.1669.429.46M10×19.9749.7949.3249.2128.8919.269.29M10×1.259.9729.7609.1609.0428.6199.089.12M12×111.97411.79411.32411.20610.89111.2511.29M12×1.2511.97211.76011.16011.02810.619
5、11.0811.12M12×1.511.96811.73210.99410.85410.34210.9110.95M14×113.97413.79413.32413.20612.89113.2513.29M14×1.513.96813.73212.99412.85412.34412.9112.95M16×115.97415.79415.32415.20614.89115.2515.29M16×1.515.96815.73214.99414.85414.34414.9014.95M18×117.97417.79417.32417.20616.89117.2517.29M18×1.517.968
6、17.73216.99416.85416.33416.9016.95M18×217.96217.68216.66316.50315.79716.5816.62M20×119.97419.79419.32419.20618.89119.2419.29M20×1.519.96819.73218.99418.85418.34418.9018.95M20×219.96219.68218.66318.50317.79718.5718.62M22×121.97421.79421.32421.20620.89121.2421.29M22×1.521.96821.73220.99420.85420.3442
7、0.9520.90M22×221.96221.68220.66320.50319.79720.5720.62M24×123.97423.79423.32423.19922.89123.2323.29M24×1.523.96823.73222.99422.84422.34422.8922.95M24×223.96223.68222.66322.49321.79722.5722.62M27×126.97426.7
