常用普通螺纹基本尺寸表

公称直径D、d 4 5 6 粗牙 细牙 粗牙 细牙 粗牙 细牙 粗牙 8 细牙 粗牙 10 细牙 粗牙 12 细牙 粗牙 14 细牙 粗牙 16 细牙 粗牙 18 细牙 粗牙 20 细牙 粗牙 22 细牙 粗牙 24 细牙 螺距P 0.7 0.5 0.8 0.5 1 0.75 1.25 1 0.75 1.5 1.25 1 0.75 1.75 1.5 1.25 1 2 1.5 1 2 1.5 1 2.5 2 1.5 1 2.5 2 1.5 1 2.5 2 1.5 1 3 2 1.5 1 中径D2或d2 3.54535 3.67525 4.4804 4.67525 5.350 5.513 7.188 7.3503 7.513 9.026 9.188 9.350 9.513 10.863 11.026 11.188 11.350 12.701 13.026 13.350 14.70.1 15.026 15.350 16.376 16.701 17.026 17.350 18.376 18.701 19.026 19.350 20.376 20.701 21.026 21.350 22.051 22.701 23.026 23.350 小径D1或d1 3.24225 3.45875 4.134 4.4575 4.917 5.188 6.647 6.917 7.188 8.376 8.647 8.917 9.188 10.106 10.376 10.647 10.917 11.835 12.376 12.917 13.835 14.376 14.917 15.294 15.835 16.376 16.917 17.294 17.835 18.376 18.917 19.294 19.835 20.376 20.917 20.752 21.835 22.376 22.917 公称直径D、d 粗牙 27 细牙 粗牙 30 细牙 粗牙 33 细牙 粗牙 36 细牙 粗牙 39 细牙 粗牙 42 细牙 粗牙 45 细牙 粗牙 48 细牙 粗牙 52 细牙 粗牙 56 螺距P 3 2 1.5 1 3.5 2 1.5 1 3.5 2 1.5 4 3 2 1.5 4 3 2 1.5 4.5 3 2 1.5 4.5 3 2 1 5 3 2 1.5 5 3 2 1.5 5.5 4 细牙 3 2 1.5 中径D2或d2 25.051 25.701 26.026 26.350 27.727 28.701 29.026 29.350 30.727 31.701 32.026 33.402 34.051 34.7.1 35.026 36.402 37.051 37.701 38.026 39.077 40.051 40.701 41.026 42.077 43.051 43.701 44.026 44.752 46.051 46.701 47.026 48.752 50.051 50.701 51.026 52.428 53.402 54.051 54.701 55.026 小径D1或d1 23.752 24.835 25.376 25.917 26.211 27.835 28.376 28.917 29.211 30.835 31.376 31.670 32.752 33.835 34.376 34.670 35.752 36.835 37.376 37.129 38.752 39.835 40.376 40.129 41.752 42.835 43.376 42.587 44.752 45.835 46.376 46.587 48.752 49.835 50.376 50.046 51.670 52.752 53.835 54.376