螺栓螺纹尺寸标准

螺纹精小径度等级最大最小最大最小最大最小

M3X0.35 2.981 2.896 2.754 2.687 2.602 2.71M4X0.5 3.98 3.874 3.655 3.58 3.439 3.6M5×0.5 4.98 4.874 4.655 4.58 4.439 4.6M6×0.75 5.978 5.838 5.491 5.391 5.166 5.42M8×0.757.9787.8387.4917.3917.1667.42M8×17.9747.7947.3247.212 6.8917.26M10×0.759.9789.8389.4919.3919.1669.42M10×19.9749.7949.3249.2128.8919.26M10×1.259.9729.769.169.0428.6199.08M12×111.97411.79411.32411.20610.89111.25M12×1.2511.97211.7611.1611.02810.61911.08M12×1.511.96811.73210.99410.85410.34210.91M14×113.97413.79413.32413.20612.89113.25M14×1.513.96813.73212.99412.85412.34412.91M16×115.97415.79415.32415.20614.89115.25

M16×1.515.96815.73214.99414.85414.34414.9

M18×117.97417.79417.32417.20616.89117.25M18×1.517.96817.73216.99416.85416.33416.9M18×217.96217.68216.66316.50315.79716.58M20×119.97419.79419.32419.20618.89119.24M20×1.519.96819.73218.99418.85418.34418.9M20×219.96219.68218.66318.50317.79718.57M22×121.97421.79421.32421.20620.89121.24M22×1.521.96821.73220.99420.85420.34420.95M22×221.96221.68220.66320.50319.79720.57M24×123.97423.79423.32423.19922.89123.23M24×1.523.96823.73222.99422.84422.34422.89M24×223.96223.68222.66322.49321.79722.57M27×126.97426.79426.32426.19925.89126.23M27×1.526.96826.73225.94425.84425.34425.89M27×226.96226.68225.66325.49324.79725.56

6g 1.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。

公制外螺纹(6g)常用规格极限尺寸表(细牙)

来源：机械专家网 发布时间：2007-05-16

公称直径×螺距大径中径螺胚直径

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