1、直径X螺距螺纹精度等级大径中径小径螺胚直径最大最小最大最小最大最小最大M3X0.52.9802.8742.6552.5802.4392.602.63M4X0.73.9783.8383.5233.4333.2203.473.50M5X0.84.9764.8264.4564.3614.1104.404.43M615.9745.7945.3245.2124.8915.265.29M8X1.257.9727.7607.1607.0426.6197.107.14M10X1.59.9689.7328.9948.8628.3448.928.96M12X1.756g11.96611.70110.82910.6
2、7910.07210.7510.79M14X213.96213.68212.66312.50311.79712.5712.62M16215.96215.68214.66314.50313.79714.5714.62M18X2.517.95817.62316.33416.16415.25216.2416.29M20X2.519.95819.62318.33418.16417.25218.2418.29M22X2.521.95821.62320.33420.16419.25220.2420.29M24X323.95223.57722.00321.80320.70421.8921.95M27X326
3、95226.57725.00324.80323.70424.8924.951.螺胚直径指滚丝前的尺寸，数值为依经验公式计算而得，在实践中需验证。公称直径X螺距螺纹精度等级大径中径小径F螺胚直径最大最小最大最小最大最小最大M3X0.356g2.9812.8962.7542.6872.6022.712.73M4X0.53.9803.8743.6553.5803.4393.603.63M5X0.54.9804.8744.6554.5804.4394.604.63M6X0.755.9785.8385.4915.3915.1665.425.46M8X0.757.9787.8387.4917.3917.
4、1667.427.46M8X17.9747.7947.3247.2126.8917.267.29M10X0.759.9789.8389.4919.3919.1669.429.46M10X19.9749.7949.3249.2128.8919.269.29M10X1.259.9729.7609.1609.0428.6199.089.12M12X111.97411.79411.32411.20610.89111.2511.29M12X1.2511.97211.76011.16011.02810.61911.0811.12M12X1.511.96811.73210.99410.85410.34210
5、9110.95M14X113.97413.79413.32413.20612.89113.2513.29M14X1.513.96813.73212.99412.85412.34412.9112.95M16115.97415.79415.32415.20614.89115.2515.29M161.515.96815.73214.99414.85414.34414.9014.95M18117.97417.79417.32417.20616.89117.2517.29M18X1.517.96817.73216.99416.85416.33416.9016.95M18X217.96217.68216
6、66316.50315.79716.5816.62M20X119.97419.79419.32419.20618.89119.2419.29M20X1.519.96819.73218.99418.85418.34418.9018.95M20X219.96219.68218.66318.50317.79718.5718.62M22X121.97421.79421.32421.20620.89121.2421.29M22X1.521.96821.73220.99420.85420.34420.9520.90M22X221.96221.68220.66320.50319.79720.5720.62
7、M24X123.97423.79423.32423.19922.89123.2323.29M24X1.523.96823.73222.99422.84422.34422.8922.95M24X223.96223.68222.66322.49321.79722.5722.62M27X126.97426.79426.32426.19925.89126.2326.29M27X1.526.96826.73225.94425.84425.34425.8925.95M27X226.96226.68225.66325.49324.79725.5625.621.螺胚直径指滚丝前的尺寸，数值为依经验公式计算而得
8、在实践中需验证。公称直径X螺距螺纹精度等级大径中径小径攻丝前钻头直径最小最大最小最大最小M3X0.53.0002.7752.6752.5992.4592.500M4X0.74.0003.6633.5453.4223.2423.300M5X0.85.0004.6054.4804.3344.1344.200M6X16.0005.5005.3505.1534.9175.000M8X1.258.0007.3487.1886.9126.6476.800M10X1.510.000).2069.0268.6768.3768.500M12X1.756H12.00011.06310.86310.44110.1
9、0610.200M14X214.00012.91312.70112.21011.83512.000M16X216.00014.91314.70114.21013.83514.000M18X2.518.00016.60016.37615.74415.29415.500M20X2.520.00018.60018.37617.74417.29417.500M22X2.522.00020.60020.37619.74419.29419.500M24X324.00022.31622.05121.25220.75221.000M27X327.00025.31625.05124.25223.75224.00
10、0公称直径X螺距螺纹精度等级大径中径小径攻丝前钻头直径最小最大最小最大最小M3X0.353.0002.8632.7732.7212.6212.65M4X0.54.0003.7753.6753.5593.4593.50M5X0.55.0004.7754.6754.5994.4594.50M6X0.756.0005.6455.5135.3785.1885.20M8X0.758.0007.6457.5137.3787.1887.20M8X18.0007.5007.3507.1536.9177.00M10X0.7510.0009.6459.5139.3789.1889.20M10X110.0008.5
11、009.3509.1538.9179.00M10X1.2510.0009.3489.1888.9128.6478.80M12X112.00011.51011.35011.15310.91711.00M12X1.2512.00011.36811.18810.91210.64710.80M12X1.512.00011.21611.02610.67610.37610.50M14X114.00013.51013.35013.15312.91713.00M14X1.514.00013.21613.02612.67612.37612.50M16X116.00015.51015.35015.15314.91
12、715.00M161.56H16.00015.21615.02614.67614.37614.50M18X118.00017.51017.35017.15316.91717.00M181.518.00017.21617.02616.67616.37616.50M18X218.00016.91316.70116.21015.83516.00M20X120.00019.51019.35019.15318.91719.00M20X1.520.00019.21619.02618.67618.37618.50M20X220.00018.91318.70118.21017.83518.00M22X122.
13、00021.51021.35021.15320.91721.00M22X1.522.00021.21621.02620.67620.37620.50M22X222.00020.91320.70120.21019.83520.00M24X124.00025.52023.35023.15322.91723.00M24X1.524.00023.22623.02622.67622.37622.50M24X224.00022.92522.70122.21021.83522.00M27X127.00026.52026.35026.15325.91726.00M27X1.527.00026.22626.02625.67625.37625.50M27X227.00025.92525.70125.21024.83525.00
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