1、G管螺纹的基本尺寸基本尺寸 中径公差 小径公差 大径公差螺纹的尺寸代号25.4mm内包含的牙数螺距P牙高h 大径 中径 小径内螺纹 外螺纹 内螺纹 外螺纹下偏差上偏差+下偏差 上偏差下偏差上偏差+下偏差上偏差A级 B级1/8 28 0.907 0.581 9.728 9.147 8.566 0 0.107 -0.107 -0.214 0 0 0.282 -0.214 01/4 19 1.337 0.856 13.157 12.301 11.445 0 0.125 -0.125 -0.250 0 0 0.445 -0.250 03/8 19 1.337 0.856 16.662 15.806 1
2、4.950 0 0.125 -0.125 -0.250 0 0 0.445 -0.250 01/2 14 1.814 1.162 20.955 19.793 18.631 0 0.142 -0.142 -0.284 0 0 0.541 -0.284 05/8 14 1.814 1.162 22.911 21.749 20.587 0 0.142 -0.142 -0.284 0 0 0.541 -0.284 03/4 14 1.814 1.162 26.441 25.279 24.117 0 0.142 -0.142 -0.284 0 0 0.541 -0.284 07/8 14 1.814 1
3、.162 30.201 29.039 27.877 0 0.142 -0.142 -0.284 0 0 0.541 -0.284 01 11 2.309 1.479 33.249 31.770 30.291 0 0.18 -0.180 -0.360 0 0 0.640 -0.360 01-1/8 11 2.309 1.479 37.897 36.418 34.939 0 0.18 -0.180 -0.360 0 0 0.640 -0.360 01- 11 2.309 1.479 41.910 40.431 38.952 0 0.18 -0.180 -0.360 0 0 0.640 -0.360
4、 01-1/2 11 2.309 1.479 47.803 46.324 44.845 0 0.18 -0.180 -0.360 0 0 0.640 -0.360 01- 11 2.309 1.479 53.746 52.267 50.788 0 0.18 -0.180 -0.360 0 0 0.640 -0.360 02 11 2.309 1.479 59.614 58.135 56.656 0 0.18 -0.180 -0.360 0 0 0.640 -0.360 02- 11 2.309 1.479 65.710 64.231 62.752 0 0.217 -0.217 -0.434 0
5、 0 0.640 -0.434 02-1/2 11 2.309 1.479 75.184 73.705 72.226 0 0.217 -0.217 -0.434 0 0 0.640 -0.434 02- 11 2.309 1.479 81.534 80.055 78.576 0 0.217 -0.217 -0.434 0 0 0.640 -0.434 03 11 2.309 1.479 87.884 86.405 84.926 0 0.217 -0.217 -0.434 0 0 0.640 -0.434 03-1/2 11 2.309 1.479 100.330 98.851 97.372 0 0.217 -0.217 -0.434 0 0 0.640 -0.434 04 11 2.309 1.479 113.030111.551110.072 0 0.217 -0.217 -0.434 0 0 0.640 -0.434 0单位：mm3/41/43/41/4
