G,ZG,NT螺纹基本尺寸六方制作

1、圆柱管螺纹基本尺寸圆柱管螺纹的公差尺寸代号每25.4mm内的牙数n螺距P/mm牙高h/mm圆弧半径r/mm基本直径外螺纹内螺纹大径d=D/mm中径d2=D2/mm小径d1=D1/mm大径公差Td下偏差 /mm小径公差TD1上偏差 /mm1/16280.9070.5810.1257.7236.561-0.214+0.2821/8280.9070.5810.1259.7288.566-0.214+0.2821/4191.3370.8560.18413.15711.445-0.250+0.4453/8191.3370.8560.18416.66214.950-0.250+0.4451/2141.81

2、41.1620.24920.95518.631-0.284+0.5415/8141.8141.1620.24922.91120.587-0.284+0.5413/4141.8141.1620.24926.44124.117-0.284+0.5417/8141.8141.1620.24930.20127.877-0.284+0.5411112.3091.4790.31733.24930.291-0.360+0.64011/3112.3091.4790.31737.89734.939-0.360+0.64011/4112.3091.4790.31741.91038.952-0.360+0.6401

3、1/2112.3091.4790.31747.80344.845-0.360+0.64013/4112.3091.4790.31753.74650.788-0.360+0.6402112.3091.4790.31759.61456.656-0.360+0.64021/4112.3091.4790.31765.71062.752-0.434+0.64021/2112.3091.4790.31775.18472.226-0.434+0.64023/4112.3091.4790.31781.53478.576-0.434+0.6403112.3091.4790.31787.88484.926-0.4

4、34+0.64031/2112.3091.4790.317100.38097.372-0.434+0.6404112.3091.4790.317113.030110.072-0.434+0.64041/2112.3091.4790.317125.730122.772-0.434+0.6405112.3091.4790.317138.430135.472-0.434+0.64051/2112.3091.4790.317151.130148.172-0.434+0.6406112.3091.4790.317163.830160.872-0.434+0.640圆锥管螺纹的基本尺寸尺寸代号每25.4m

5、m内的牙数n螺距P/mm牙高h/mm圆弧半径r/mm基面上的直径有效螺纹长度/mm基准长度圆锥内螺纹基面轴向位移的极限偏差T2/2装配余量有效螺纹长度大径d=D/mm中径d2=D2/mm小径d1=D1/mm基本/mm极限偏差T1/2最大/mm最小/mm/mm圈数/mm圈数/mm圈数基本/mm最大/mm最小/mm1/16280.9070.5810.1257.7237.1426.5616.54.00.914.93.11.111/42.523/46.57.45.61/8280.9070.5810.1259.7289.1478.5666.54.00.914.93.11.111/42.523/46.57

6、.45.61/4191.3370.8760.18413.15712.30111.4459.76.01.317.34.71.711/43.723/49.711.08.43/8191.3370.8560.18416.66215.80614.95010.16.41.317.75.11.711/43.723/410.111.48.81/2141.8141.1620.24920.95519.79318.63113.28.21.8110.06.42.311/45.023/413.215.011.43/4141.8141.1620.24926.44125.27924.11714.59.51.8111.37.

7、72.311/45.023/414.516.312.71112.3091.4790.31733.24931.77030.29116.810.42.3112.78.12.911/46.423/416.819.114.511/4112.3091.4790.31741.91040.43138.95219.112.72.3115.010.42.911/46.423/419.121.416.811/2112.3091.4790.31747.80346.32444.84519.112.72.3115.010.42.911/46.423/419.121.416.82112.3091.4790.31759.6

8、1458.13556.65623.415.92.3118.213.62.911/47.531/423.425.721.121/2112.3091.4790.31775.18473.70572.22626.717.53.511/221.014.03.511/29.2426.730.223.23112.3091.4790.31787.88486.40584.92629.820.63.511/224.117.13.511/29.2429.833.326.331/2112.3091.4790.317100.33098.85197.37231.422.23.511/225.718.73.511/29.2

9、431.434.927.94112.3091.4790.317113.030111.551110.07235.825.43.511/228.921.93.511/210.441/235.839.332.35112.3091.4790.317138.430136.951135.47240.128.63.511/232.125.13.511/211.5540.143.636.66112.3091.4790.317163.830162.351160.87240.128.63.511/232.125.13.511/211.5540.143.636.6注：1.本表适用于圆锥外螺纹与圆锥内螺纹和圆柱内螺纹

10、两种联接形式。2.当内螺纹的结构无螺尾时（空刀槽），有效螺纹长度不应小于表中最小值得0.8倍。3.与圆锥外螺纹配合的圆柱内螺纹，其各直径的极限偏差均为圆锥内螺纹基准面轴向位移的1/16。尺寸代号为31/2的螺纹，限用于蒸汽机车。60圆锥管螺纹的基本尺寸（NPT）螺纹的尺寸代号每25.4mm内的螺纹牙数n基本上的基本直径基准距离L1装配余量L3大径（基准直径）d=D/mm中径d2=D2/mm小径d1=D1/mm/mm牙数/mm牙数1/16277.8956.3894.0644.322.82231/82710.2428.7364.1024.362.82231/41813.61611.3585.786

11、4.104.23433/81817.05514.7976.0964.324.23431/21421.22318.3218.1284.485.44333/41426.56823.6668.6114.755.4433111.533.22829.69410.1604.606.627311/411.541.98538.45110.6684.836.627311/211.548.05444.52010.6684.836.6273211.560.09256.55811.0745.016.627321/2872.69967.61917.3235.466.35023888.60883.52819.4566.136.350231/28101.31696.23620.8536.576.350248113.973108.89321.