公制细螺纹公制标准螺纹规格标准径2级螺纹内径规格1级-2级螺纹内径标准径上限下限上限下限M1*0.250.750.7850.729M1*0.200.80.8210.783M1.1*0.250.850.8850.829M1.1*0.200.90.9210.883M1.2*.250.950.9850.929M1.2*0.2011.0210.983M1.4*0.31.11.1421.075M1.4*0.201.21.2211.183M1.6*0.351.251.3211.221M1.6*0.201.41.4211.383M1.7*0.351.351.4211.321*M1.7*0.201.451.51.46M1.8*0.351.451.5211.421M1.8*0.201.61.6211.583M2*0.41.61.6791.576M2*0.251.751.7851.729M2.2*0.451.751.8381.713M2.2*0.251.951.9851.929M2.3*0.41.91.9791.867*M2.3*0.252.052.0162.001M2.5*0.452.12.1382.013M2.5*0.352.1212.2212.121M2.6*0.452.22.2382.113*M2.6*0.352.22.2462.186M3*0.52.52.5992.459M3*0.352.72.7212.621*M3*0.62.42.442.28M3.5*0.353.23.2213.121M3.5*0.62.93.012.85M4*0.503.53.5993.459M4*0.73.33.4223.242M4.5*0.5044.0993.959*M4*0.753.253.3263.106M5*0.504.54.5994.459M4.5*0.753.83.8783.688M5.5*0.5055.0994.959M5*0.84.24.3344.134M6*0.755.35.3785.188*M5*0.94.14.173.93*M6*0.55.55.555.4M6*155.1534.917M7*0.756.36.3786.188M7*166.1535.917*M7*0.506.56.556.4M8*1.256.86.9126.647M8*1.077.1536.917M9*1.257.87.9127.647M8*0.757.37.3787.188M10*1.58.58.6768.376*M8*0.507.57.527.4M11*1.59.59.6769.376M9*1.088.1537.917M12*1.7510.310.44110.106M9*0.758.38.3788.188M14*21212.2111.835M10*1.258.88.9128.647M16*21414.2113.835M18*2.515.515.74415.249M20*2.517.517.74417.249M22*2.519.519.74419.249M24*32121.25220.752M27*32424.25223.752M30*3.526.526.77126.211M33*3.529.529.77129.211M36*43232.2731.67M39*43535.2734.67M42*4.537.537.77937.129M45*4.540.540.77940.129M48*54343.27942.587附*号螺纹自学968年3月删除公制细螺纹