极限尺寸
极限尺寸
2级标准系列统一螺纹的极限尺寸(0~15/16)
2级标准系列统一螺纹的极限尺寸 |
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
公称直径 -牙数 |
系列 代号 |
|
2B 内螺纹 |
||||||||
大径 d |
中径 d2 |
UNR 小径d3 (参考) |
小径 D1 |
中径 D2 |
大径 D |
||||||
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
||
0-80 |
UNF |
0.059 5 |
0.056 3 |
0.051 4 |
0.049 6 |
0.044 6 |
0.046 5 |
0.051 4 |
0.051 9 |
0.054 2 |
0.060 0 |
1-64 |
UNC |
0.072 4 |
0.068 6 |
0.062 3 |
0.060 3 |
0.053 8 |
0.056 1 |
0.062 2 |
0.062 9 |
0.065 5 |
0.073 0 |
1-72 |
UNF |
0.072 4 |
0.068 9 |
0.063 4 |
0.061 5 |
0.055 9 |
0.058 0 |
0.063 4 |
0.064 0 |
0.066 5 |
0.073 0 |
2-56 |
UNC |
0.085 4 |
0.081 3 |
0.073 8 |
0.071 7 |
0.064 1 |
0.066 7 |
0.073 7 |
0.074 4 |
0.077 2 |
0.086 0 |
2-64 |
UNF |
0.085 4 |
0.081 6 |
0.075 3 |
0.073 3 |
0.066 8 |
0.069 1 |
0.075 2 |
0.075 9 |
0.078 6 |
0.086 0 |
3-48 |
UNC |
0.098 3 |
0.093 8 |
0.084 8 |
0.082 5 |
0.073 5 |
0.076 4 |
0.084 5 |
0.085 5 |
0.088 5 |
0.099 0 |
3-56 |
UNF |
0.098 3 |
0.094 2 |
0.086 7 |
0.084 5 |
0.077 0 |
0.079 7 |
0.086 5 |
0.087 4 |
0.090 2 |
0.099 0 |
4-40 |
UNC |
0.111 2 |
0.106 1 |
0.095 0 |
0.092 3 |
0.081 4 |
0.084 9 |
0.093 9 |
0.095 8 |
0.099 1 |
0.112 0 |
4-48 |
UNF |
0.111 3 |
0.106 8 |
0.097 8 |
0.095 4 |
0.086 5 |
0.089 4 |
0.096 8 |
0.098 5 |
0.101 6 |
0.112 0 |
5-40 |
UNC |
0.124 2 |
0.119 1 |
0.108 0 |
0.105 4 |
0.094 4 |
0.097 9 |
0.106 2 |
0.108 8 |
0.112 1 |
0.125 0 |
5-44 |
UNF |
0.124 3 |
0.119 5 |
0.109 5 |
0.107 0 |
0.097 2 |
0.100 4 |
0.107 9 |
0.110 2 |
0.113 4 |
0.125 0 |
6-32 |
UNC |
0.137 2 |
0.131 2 |
0.116 9 |
0.114 1 |
0.100 0 |
0.104 |
0.114 |
0.117 7 |
0.121 4 |
0.138 0 |
6-40 |
UNF |
0.137 2 |
0.132 1 |
0.121 0 |
0.118 4 |
0.107 4 |
0.011 1 |
0.119 |
0.121 8 |
0.125 2 |
0.138 0 |
8-32 |
UNC |
0.163 1 |
0.157 1 |
0.142 8 |
0.139 9 |
0.125 9 |
0.130 |
0.139 |
0.143 7 |
0.147 5 |
0.164 0 |
8-36 |
UNF |
0.163 2 |
0.157 7 |
0.145 2 |
0.142 4 |
0.130 1 |
0.134 |
0.142 |
0.146 0 |
0.149 6 |
0.164 0 |
10-24 |
UNC |
0.189 0 |
0.181 8 |
0.161 9 |
0.158 6 |
0.139 4 |
0.145 |
0.155 |
0.162 9 |
0.167 2 |
0.190 0 |
10-32 |
UNF |
0.189 1 |
0.183 1 |
0.168 8 |
0.165 8 |
0.151 9 |
0.156 |
0.164 |
0.169 7 |
0.173 6 |
0.190 0 |
12-24 |
UNC |
0.215 0 |
0.207 8 |
0.187 9 |
0.184 5 |
0.165 4 |
0.171 |
0.181 |
0.188 9 |
0.193 3 |
0.216 0 |
12-28 |
UNF |
0.215 0 |
0.208 5 |
0.191 8 |
0.188 6 |
0.172 5 |
0.177 |
0.186 |
0.192 8 |
0.197 0 |
0.216 0 |
12-32 |
UNEF |
0.215 0 |
0.209 0 |
0.194 7 |
0.191 5 |
0.177 8 |
0.182 |
0.190 |
0.195 7 |
0.199 8 |
0.216 0 |
1/4-20 |
UNC |
0.248 9 |
0.240 8 |
0.216 4 |
0.212 7 |
0.189 4 |
0.196 |
0.207 |
0.217 5 |
0.222 4 |
0.250 0 |
1/4-28 |
UNF |
0.249 0 |
0.242 5 |
0.225 8 |
0.222 5 |
0.206 5 |
0.211 |
0.220 |
0.226 8 |
0.231 1 |
0.250 0 |
1/4-32 |
UNEF |
0.249 0 |
0.243 0 |
0.228 7 |
0.222 5 |
0.211 8 |
0.216 |
0.224 |
0.229 7 |
0.233 9 |
0.250 0 |
5/16-18 |
UNC |
0.311 3 |
0.302 6 |
0.275 2 |
0.271 2 |
0.245 1 |
0.252 |
0.265 |
0.276 4 |
0.281 7 |
0.312 5 |
5/16-20 |
UN |
0.311 3 |
0.303 2 |
0.278 8 |
0.274 7 |
0.251 8 |
0.258 |
0.270 |
0.280 0 |
0.285 3 |
0.312 5 |
5/16-24 |
UNF |
0.311 4 |
0.304 2 |
0.284 3 |
0.280 6 |
0.261 8 |
0.267 |
0.277 |
0.285 4 |
0.290 2 |
0.312 5 |
5/16-28 |
UN |
0.311 5 |
0.305 0 |
0.288 3 |
0.284 8 |
0.269 0 |
0.274 |
0.282 |
0.289 3 |
0.293 8 |
0.312 5 |
5/16-32 |
UNEF |
0.311 5 |
0.305 5 |
0.291 2 |
0.287 9 |
0.274 3 |
0.279 |
0.286 |
0.292 2 |
0.296 5 |
0.312 5 |
3/8-16 |
UNC |
0.373 7 |
0.364 3 |
0.333 1 |
0.328 7 |
0.299 3 |
0.307 |
0.321 |
0.334 4 |
0.340 1 |
0.375 0 |
3/8-20 |
UN |
0.373 8 |
0.365 7 |
0.341 3 |
0.337 2 |
0.314 3 |
0.321 |
0.332 |
0.342 5 |
0.347 9 |
0.375 0 |
3/8-24 |
UNF |
0.373 9 |
0.366 7 |
0.346 8 |
0.343 0 |
0.324 3 |
0.330 |
0.340 |
0.347 9 |
0.352 8 |
0.375 0 |
3/8-28 |
UN |
0.373 9 |
0.367 4 |
0.350 7 |
0.347 1 |
0.331 4 |
0.336 |
0.345 |
0.351 8 |
0.356 4 |
0.375 0 |
3/8-32 |
UNEF |
0.374 0 |
0.368 0 |
0.353 7 |
0.350 3 |
0.336 8 |
0.341 |
0.349 |
0.354 7 |
0.359 1 |
0.375 0 |
7/16-14 |
UNC |
0.436 1 |
0.425 8 |
0.389 7 |
0.385 0 |
0.351 0 |
0.360 |
0.376 |
0.391 1 |
0.397 2 |
0.437 5 |
7/16-16 |
UN |
0.436 1 |
0.426 7 |
0.395 5 |
0.390 9 |
0.361 7 |
0.370 |
0.384 |
0.396 9 |
0.402 9 |
0.437 5 |
7/16-20 |
UNF |
0.436 2 |
0.428 1 |
0.403 7 |
0.399 5 |
0.376 7 |
0.383 |
0.395 |
0.405 0 |
0.410 4 |
0.437 5 |
7/16-28 |
UNEF |
0.436 4 |
0.429 9 |
0.413 2 |
0.409 6 |
0.393 9 |
0.399 |
0.407 |
0.414 3 |
0.419 0 |
0.437 5 |
7/16-32 |
UN |
0.436 5 |
0.430 5 |
0.416 2 |
0.412 8 |
0.399 3 |
0.404 |
0.411 |
0.417 2 |
0.421 6 |
0.437 5 |
1/2-13 |
UNC |
0.498 5 |
0.487 6 |
0.448 5 |
0.443 5 |
0.406 9 |
0.417 |
0.434 |
0.450 0 |
0.456 5 |
0.500 0 |
1/2-16 |
UN |
0.498 6 |
0.489 2 |
0.458 0 |
0.453 3 |
0.424 2 |
0.432 |
0.446 |
0.459 4 |
0.465 5 |
0.500 0 |
1/2-20 |
UNF |
0.498 7 |
0.490 6 |
0.466 2 |
0.461 9 |
0.439 2 |
0.446 |
0.457 |
0.467 5 |
0.473 1 |
0.500 0 |
1/2-28 |
UNEF |
0.498 9 |
0.492 4 |
0.475 7 |
0.472 0 |
0.456 4 |
0.461 |
0.470 |
0.476 8 |
0.481 6 |
0.500 0 |
1/2-32 |
UN |
0.490 0 |
0.493 0 |
0.478 7 |
0.475 2 |
0.461 8 |
0.466 |
0.474 |
0.479 7 |
0.484 2 |
0.500 0 |
9/16-12 |
UNC |
0.560 9 |
0.549 5 |
0.506 8 |
0.501 6 |
0.461 7 |
0.472 |
0.490 |
0.508 4 |
0.515 2 |
0.562 5 |
9/16-16 |
UN |
0.561 1 |
0.551 7 |
0.520 5 |
0.515 8 |
0.486 7 |
0.495 |
0.509 |
0.521 9 |
0.528 0 |
0.562 5 |
9/16-18 |
UNF |
0.561 1 |
0.552 4 |
0.525 0 |
0.520 5 |
0.494 9 |
0.502 |
0.515 |
0.526 4 |
0.532 3 |
0.562 5 |
9/16-20 |
UN |
0.561 2 |
0.553 1 |
0.528 7 |
0.524 4 |
0.501 7 |
0.508 |
0.520 |
0.530 0 |
0.535 6 |
0.562 5 |
9/16-24 |
UNEF |
0.561 3 |
0.554 1 |
0.534 2 |
0.530 2 |
0.511 7 |
0.517 |
0.527 |
0.535 4 |
0.540 5 |
0.562 5 |
9/16-28 |
UN |
0.561 4 |
0.554 9 |
0.538 2 |
0.534 5 |
0.518 9 |
0.524 |
0.532 |
0.539 3 |
0.544 1 |
0.562 5 |
9/16-32 |
UN |
0.561 4 |
0.555 4 |
0.541 1 |
0.537 6 |
0.524 2 |
0.529 |
0.536 |
0.542 2 |
0.546 8 |
0.562 5 |
5/8-11 |
UNC |
0.623 3 |
0.611 2 |
0.564 3 |
0.558 8 |
0.515 0 |
0.527 |
0.546 |
0.566 0 |
0.573 2 |
0.625 0 |
5/8-12 |
UN |
0.623 4 |
0.612 0 |
0.569 3 |
0.563 9 |
0.524 2 |
0.535 |
0.553 |
0.570 9 |
0.578 0 |
0.625 0 |
5/8-16 |
UN |
0.623 6 |
0.614 2 |
0.583 0 |
0.578 2 |
0.549 2 |
0.557 |
0.571 |
0.584 4 |
0.590 6 |
0.625 0 |
5/8-18 |
UNF |
0.623 6 |
0.614 9 |
0.587 5 |
0.582 8 |
0.557 4 |
0.565 |
0.578 |
0.588 9 |
0.594 9 |
0.625 0 |
5/8-20 |
UN |
0.623 7 |
0.615 6 |
0.591 2 |
0.586 9 |
0.564 2 |
0.571 |
0.582 |
0.592 5 |
0.598 1 |
0.625 0 |
5/8-24 |
UNEF |
0.623 8 |
0.615 6 |
0.596 7 |
0.592 7 |
0.574 2 |
0.580 |
0.590 |
0.597 9 |
0.603 1 |
0.625 0 |
5/8-28 |
UN |
0.623 9 |
0.617 4 |
0.600 7 |
0.596 9 |
0.581 4 |
0.586 |
0.595 |
0.601 8 |
0.606 7 |
0.625 0 |
5/8-32 |
UN |
0.623 9 |
0.617 9 |
0.603 6 |
0.600 0 |
0.586 7 |
0.591 |
0.599 |
0.604 7 |
0.609 3 |
0.625 0 |
11/16-12 |
UN |
0.685 9 |
0.674 5 |
0.631 8 |
0.626 3 |
0.586 7 |
0.597 |
0.615 |
0.633 4 |
0.640 5 |
0.687 5 |
11/16-16 |
UN |
0.686 1 |
0.676 7 |
0.645 5 |
0.640 7 |
0.611 7 |
0.620 |
0.634 |
0.646 9 |
0.653 2 |
0.687 5 |
11/16-20 |
UN |
0.686 2 |
0.678 1 |
0.653 7 |
0.649 3 |
0.626 7 |
0.633 |
0.645 |
0.655 0 |
0.660 7 |
0.687 5 |
11/16-24 |
UNEF |
0.686 3 |
0.679 1 |
0.659 2 |
0.655 2 |
0.636 7 |
0.642 |
0.652 |
0.660 4 |
0.665 7 |
0.687 5 |
11/16-28 |
UN |
0.686 4 |
0.679 9 |
0.663 2 |
0.659 4 |
0.643 9 |
0.649 |
0.657 |
0.664 3 |
0.669 2 |
0.687 5 |
11/16-32 |
UN |
0.686 4 |
0.680 4 |
0.666 1 |
0.662 5 |
0.649 2 |
0.654 |
0.661 |
0.667 2 |
0.671 9 |
0.687 5 |
3/4-10 |
UNC |
0.748 2 |
0.735 3 |
0.683 2 |
0.677 3 |
0.629 1 |
0.642 |
0.663 |
0.685 0 |
0.692 7 |
0.750 0 |
3/4-12 |
UN |
0.748 3 |
0.736 9 |
0.694 2 |
0.688 7 |
0.649 1 |
0.660 |
0.678 |
0.695 9 |
0.703 1 |
0.750 0 |
3/4-16 |
UNF |
0.748 5 |
0.739 1 |
0.707 9 |
0.702 9 |
0.674 1 |
0.682 |
0.696 |
0.709 4 |
0.715 9 |
0.750 0 |
3/4-20 |
UNEF |
0.748 7 |
0.740 6 |
0.716 2 |
0.711 8 |
0.689 2 |
0.696 |
0.707 |
0.717 5 |
0.723 2 |
0.750 0 |
3/4-28 |
UN |
0.748 8 |
0.742 3 |
0.725 6 |
0.721 8 |
0.706 3 |
0.711 |
0.720 |
0.726 8 |
0.731 8 |
0.750 0 |
3/4-32 |
UN |
0.748 9 |
0.742 9 |
0.728 6 |
0.725 0 |
0.711 7 |
0.716 |
0.724 |
0.729 7 |
0.734 4 |
0.750 0 |
13/16-12 |
UN |
0.810 8 |
0.799 4 |
0.756 7 |
0.751 1 |
0.711 6 |
0.722 |
0.740 |
0.758 4 |
0.765 6 |
0.812 5 |
13/16-16 |
UN |
0.811 0 |
0.801 6 |
0.770 4 |
0.765 5 |
0.736 6 |
0.745 |
0.759 |
0.771 9 |
0.778 3 |
0.812 5 |
13/16-20 |
UNEF |
0.811 2 |
0.803 1 |
0.778 7 |
0.774 3 |
0.751 7 |
0.758 |
0.770 |
0.780 0 |
0.785 8 |
0.812 5 |
13/16-28 |
UN |
0.811 3 |
0.804 8 |
0.788 1 |
0.784 2 |
0.768 8 |
0.774 |
0.782 |
0.789 3 |
0.794 3 |
0.812 5 |
13/16-32 |
UN |
0.811 4 |
0.805 4 |
0.791 1 |
0.787 4 |
0.774 2 |
0.779 |
0.786 |
0.792 2 |
0.797 0 |
0.812 5 |
7/8-9 |
UNC |
0.873 1 |
0.859 2 |
0.800 9 |
0.794 6 |
0.740 8 |
0.755 |
0.778 |
0.802 8 |
0.811 0 |
0.875 0 |
7/8-12 |
UN |
0.873 3 |
0.861 9 |
0.819 2 |
0.813 6 |
0.774 1 |
0.785 |
0.803 |
0.820 9 |
0.828 2 |
0.875 0 |
7/8-14 |
UNF |
0.873 4 |
0.863 1 |
0.827 0 |
0.821 6 |
0.788 3 |
0.798 |
0.813 |
0.828 6 |
0.835 6 |
0.875 0 |
7/8-16 |
UN |
0.873 5 |
0.864 1 |
0.832 9 |
0.828 0 |
0.799 1 |
0.807 |
0.821 |
0.834 4 |
0.840 8 |
0.875 0 |
7/8-20 |
UNEF |
0.873 7 |
0.865 6 |
0.841 2 |
0.836 7 |
0.814 2 |
0.821 |
0.832 |
0.842 5 |
0.848 3 |
0.875 0 |
7/8-28 |
UN |
0.873 8 |
0.867 3 |
0.850 6 |
0.846 7 |
0.831 3 |
0.836 |
0.845 |
0.851 8 |
0.856 9 |
0.875 0 |
7/8-32 |
UN |
0.873 9 |
0.867 9 |
0.853 6 |
0.849 9 |
0.836 7 |
0.841 |
0.849 |
0.854 7 |
0.859 5 |
0.875 0 |
15/16-12 |
UN |
0.935 8 |
0.924 4 |
0.881 7 |
0.876 1 |
0.836 6 |
0.847 |
0.865 |
0.883 4 |
0.890 7 |
0.937 5 |
15/16-16 |
UN |
0.936 0 |
0.926 6 |
0.895 4 |
0.890 4 |
0.861 6 |
0.870 |
0.884 |
0.896 9 |
0.903 3 |
0.937 5 |
2级标准系列统一螺纹的极限尺寸(15/16~1 3/4)
2级标准系列统一螺纹的极限尺寸 |
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
公称直径 -牙数 |
系列 代号 |
|
2B 内螺纹 |
||||||||
大径 d |
中径 d2 |
UNR 小径d3 (参考) |
小径 D1 |
中径 D2 |
大径 D |
||||||
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
||
15/16-20 |
UNEF |
0.936 1 |
0.928 0 |
0.903 6 |
0.899 1 |
0.876 6 |
0.883 |
0.895 |
0.905 0 |
0.910 9 |
0.937 5 |
15/16-28 |
UN |
0.936 3 |
0.929 8 |
0.913 1 |
0.909 2 |
0.893 8 |
0.899 |
0.907 |
0.914 3 |
0.919 4 |
0.937 5 |
15/16-32 |
UN |
0.936 4 |
0.930 4 |
0.916 1 |
0.912 3 |
0.899 2 |
0.904 |
0.911 |
0.917 2 |
0.922 1 |
0.937 5 |
1-8 |
UNC |
0.998 0 |
0.983 0 |
0.916 8 |
0.910 1 |
0.849 2 |
0.865 |
0.890 |
0.918 8 |
0.927 6 |
1.000 0 |
1-12 |
UNF |
0.998 2 |
0.986 8 |
0.944 1 |
0.938 2 |
0.899 0 |
0.910 |
0.928 |
0.945 9 |
0.953 5 |
1.000 0 |
1-16 |
UN |
0.998 5 |
0.989 1 |
0.957 9 |
0.952 9 |
0.924 1 |
0.932 |
0.946 |
0.959 4 |
0.965 9 |
1.000 0 |
1-20 |
UNEF |
0.998 6 |
0.990 5 |
0.966 1 |
0.961 6 |
0.939 1 |
0.946 |
0.957 |
0.967 5 |
0.973 4 |
1.000 0 |
1-28 |
UN |
0.998 8 |
0.992 3 |
0.975 6 |
0.971 6 |
0.956 3 |
0.961 |
0.970 |
0.976 8 |
0.982 0 |
1.000 0 |
1-32 |
UN |
0.998 9 |
0.992 9 |
03978 6 |
0.974 8 |
0.961 7 |
0.966 |
0.974 |
0.979 7 |
0.984 6 |
1.000 0 |
11/16-8 |
UN |
1.060 5 |
1.045 5 |
0.979 3 |
0.972 5 |
0.911 7 |
0.927 |
0.952 |
0.981 3 |
0.990 2 |
1.062 5 |
11/16-12 |
UN |
1.060 8 |
1.049 4 |
1.006 7 |
1.001 0 |
0.961 6 |
0972 |
0.990 |
1.008 4 |
1.015 8 |
1.062 5 |
11/16-16 |
UN |
1.061 0 |
1.051 6 |
1.020 4 |
1.015 4 |
0.986 6 |
0.995 |
1.009 |
1.021 9 |
1.028 4 |
1.062 5 |
11/16-18 |
UNEF |
1.061 1 |
1.052 4 |
1.025 0 |
1.020 2 |
0.994 9 |
1.002 |
1.015 |
1.026 4 |
1.032 6 |
1.062 5 |
11/16-20 |
UN |
1.061 1 |
1.053 0 |
1.028 6 |
1.024 0 |
1.001 6 |
1.008 |
1.020 |
1.030 0 |
1.035 9 |
1.062 5 |
11/16-28 |
UN |
1.061 3 |
1.054 8 |
1.038 1 |
1.034 1 |
1.018 8 |
1.024 |
1.032 |
1.039 3 |
1.044 5 |
1.062 5 |
11/8-7 |
UNC |
1.122 8 |
1.106 4 |
1.030 0 |
1.022 8 |
0.952 7 |
0.970 |
0.998 |
1.032 2 |
1.041 6 |
1.125 0 |
11/8-8 |
UN |
1.122 9 |
1.107 9 |
1.041 7 |
1.034 8 |
0.974 1 |
0.990 |
1.015 |
1.043 8 |
1.052 8 |
1.125 0 |
11/8-12 |
UNF |
1.123 2 |
1.111 8 |
1.069 1 |
1.063 1 |
1.024 0 |
1.035 |
1.053 |
1.070 9 |
1.078 7 |
1.125 0 |
11/8-16 |
UN |
1.123 5 |
1.114 1 |
1.082 9 |
1.077 9 |
1.049 1 |
1.057 |
1.071 |
1.084 4 |
1.091 0 |
1.125 0 |
11/8-18 |
UNEF |
1.123 6 |
1.114 9 |
1.087 5 |
1.082 7 |
1.057 4 |
1.065 |
1.078 |
1.088 9 |
1.095 1 |
1.125 0 |
11/8-20 |
UN |
1.123 6 |
1.115 5 |
1.091 1 |
1.086 5 |
1.064 1 |
1.071 |
1.082 |
1.092 5 |
1.098 5 |
1.125 0 |
11/8-28 |
UN |
1.123 8 |
1.117 3 |
1.100 6 |
1.096 6 |
1.081 3 |
1.086 |
1.095 |
1.101 8 |
1.107 0 |
1.125 0 |
13/16-8 |
UN |
1.185 4 |
1.170 4 |
1.104 2 |
1.097 2 |
1.036 6 |
1.052 |
1.077 |
1.106 3 |
1.115 4 |
1.187 5 |
13/16-12 |
UN |
1.185 8 |
1.174 4 |
1.131 7 |
1.126 0 |
1.086 6 |
1.097 |
1.115 |
1.133 4 |
1.140 9 |
1.187 5 |
13/16-16 |
UN |
1.186 0 |
1.176 6 |
1.145 4 |
1.140 3 |
1.111 6 |
1.120 |
1.134 |
1.146 9 |
1.153 5 |
1.187 5 |
13/16-18 |
UNEF |
1.186 1 |
1.177 4 |
1.150 0 |
1.145 2 |
1.119 9 |
1.127 |
1.140 |
1.151 4 |
1.157 7 |
1.187 5 |
13/16-20 |
UN |
1.186 1 |
1.178 0 |
1.153 6 |
1.149 0 |
1.126 6 |
1.133 |
1.145 |
1.155 0 |
1.161 0 |
1.187 5 |
13/16-28 |
UN |
1.186 3 |
1.179 8 |
1.163 1 |
1.159 0 |
1.143 8 |
1.149 |
1.157 |
1.164 3 |
1.169 6 |
1.187 5 |
11/4-7 |
UNC |
1.247 8 |
1.231 4 |
1.155 0 |
1.147 6 |
1.077 7 |
1.095 |
1.123 |
1.157 2 |
1.166 8 |
1.250 0 |
11/4-8 |
UN |
1.247 9 |
1.232 9 |
1.166 7 |
1.159 7 |
1.099 1 |
1.115 |
1.140 |
1.168 8 |
1.178 0 |
1.250 0 |
11/4-12 |
UNF |
1.248 2 |
1.236 8 |
1.194 1 |
1.187 9 |
1.149 0 |
1.160 |
1.178 |
1.195 9 |
1.203 9 |
1.250 0 |
11/4-16 |
UN |
1.248 5 |
1.239 1 |
1.207 9 |
1.202 8 |
1.174 1 |
1.182 |
1.196 |
1.209 4 |
1.216 0 |
1.250 0 |
11/4-18 |
UNEF |
1.248 5 |
1.239 8 |
1.212 4 |
1.207 5 |
1.182 3 |
1.190 |
1.203 |
1.213 9 |
1.220 2 |
1.250 0 |
11/4-20 |
UN |
1.248 6 |
1.240 5 |
1.216 1 |
1.211 4 |
1.189 1 |
1.196 |
1.207 |
1.217 5 |
1.223 6 |
1.250 0 |
11/4-28 |
UN |
1.248 8 |
1.242 3 |
1.225 6 |
1.221 5 |
1.206 3 |
1.211 |
1.220 |
1.226 8 |
1.232 1 |
1.250 0 |
15/16-8 |
UN |
1.310 4 |
1.295 4 |
1.229 2 |
1.222 1 |
1.161 6 |
1.177 |
1.202 |
1.231 3 |
1.240 5 |
1.312 5 |
15/16-12 |
UN |
1.310 8 |
1.299 4 |
1.256 7 |
1.250 9 |
1.211 6 |
1.222 |
1.240 |
1.258 4 |
1.265 9 |
1.312 5 |
15/16-16 |
UN |
1.311 0 |
1.301 6 |
1.270 4 |
1.265 3 |
1.236 6 |
1.245 |
1.259 |
1.271 9 |
1.278 6 |
1.312 5 |
15/16-18 |
UNEF |
1.311 0 |
1.302 3 |
1.274 9 |
1.270 0 |
1.244 8 |
1.252 |
1.265 |
1.276 4 |
1.282 8 |
1.312 5 |
15/16-20 |
UN |
1.311 1 |
1.303 0 |
1.278 6 |
1.273 9 |
1.251 6 |
1.258 |
1.270 |
1.280 0 |
1.286 1 |
1.312 5 |
15/16-28 |
UN |
1.311 3 |
1.304 8 |
1.288 1 |
1.284 0 |
1.268 8 |
1.274 |
1.282 |
1.289 3 |
1.294 7 |
1.312 5 |
13/8-6 |
UNC |
1.372 6 |
1.354 4 |
1.264 3 |
1.256 3 |
1.174 1 |
1.195 |
1.225 |
1.266 7 |
1.277 1 |
1.375 0 |
13/8-8 |
UN |
1.372 8 |
1.357 8 |
1.291 6 |
1.284 4 |
1.224 0 |
1.240 |
1.265 |
1.293 8 |
1.303 1 |
1.375 0 |
13/8-12 |
UNF |
1.373 1 |
1.361 7 |
1.319 0 |
1.312 7 |
1.273 9 |
1.285 |
1.303 |
1.320 9 |
1.329 1 |
1.375 0 |
13/8-16 |
UN |
1.373 5 |
1.364 1 |
1.332 9 |
1.327 7 |
1.299 1 |
1.307 |
1.321 |
1.334 4 |
1.341 1 |
1.375 0 |
13/8-18 |
UNEF |
1.373 5 |
1.364 8 |
1.337 4 |
1.332 5 |
1.307 3 |
1.315 |
1.328 |
1.338 9 |
1.345 3 |
1.375 0 |
13/8-20 |
UN |
1.373 6 |
1.365 5 |
1.341 1 |
1.336 4 |
1.314 1 |
1.321 |
1.332 |
1.342 5 |
1.348 6 |
1.375 0 |
13/8-28 |
UN |
1.373 8 |
1.367 3 |
1.350 6 |
1.346 5 |
1.331 3 |
1.336 |
1.345 |
1.351 8 |
1.357 2 |
1.375 0 |
17/16-6 |
UN |
1.435 1 |
1.416 9 |
1.326 8 |
1.318 8 |
1.236 6 |
1.257 |
1.288 |
1.329 2 |
1.339 6 |
1.437 5 |
17/16-8 |
UN |
1.435 3 |
1.420 3 |
1.354 1 |
1.346 9 |
1.286 5 |
1.302 |
1.327 |
1.356 3 |
1.365 7 |
1.437 5 |
17/16-12 |
UN |
1.435 7 |
1.424 3 |
1.381 6 |
1.375 7 |
1.336 5 |
1.347 |
1.365 |
1.383 4 |
1.391 0 |
1.437 5 |
17/16-16 |
UN |
1.435 9 |
1.426 5 |
1.395 3 |
1.390 1 |
1.361 5 |
1.370 |
1.384 |
1.396 9 |
1.403 6 |
1.437 5 |
17/16-18 |
UNEF |
1.436 0 |
1.427 3 |
1.399 9 |
1.395 0 |
1.369 8 |
1.377 |
1.390 |
1.401 4 |
1.407 8 |
1.437 5 |
17/16-20 |
UN |
1.436 1 |
1.428 0 |
1.403 6 |
1.398 9 |
1.376 6 |
1.383 |
1.395 |
1.405 0 |
1.411 2 |
1.437 5 |
17/16-28 |
UN |
1.436 2 |
1.429 7 |
1.413 0 |
1.408 8 |
1.393 7 |
1.399 |
1.407 |
1.414 3 |
1.419 7 |
1.437 5 |
11/2-6 |
UNC |
1.497 6 |
1.479 4 |
1.389 3 |
1.381 2 |
1.299 1 |
1.320 |
1.350 |
1.391 7 |
1.402 2 |
1.500 0 |
11/2-8 |
UN |
1.497 8 |
1.482 8 |
1.416 6 |
1.409 3 |
1.349 0 |
1.365 |
1.390 |
1.418 8 |
1.428 3 |
1.500 0 |
11/2-12 |
UNF |
1.498 1 |
1.486 7 |
1.444 0 |
1.437 6 |
1.398 9 |
1.410 |
1.428 |
1.445 9 |
1.454 2 |
1.500 0 |
11/2-16 |
UN |
1.498 4 |
1.489 0 |
1.457 8 |
1.452 6 |
1.424 0 |
1.432 |
1.446 |
1.459 4 |
1.466 2 |
1.500 0 |
11/2-18 |
UNEF |
1.498 5 |
1.489 8 |
1.462 4 |
1.457 4 |
1.432 3 |
1.440 |
1.453 |
1.463 9 |
1.470 4 |
1.500 0 |
11/2-20 |
UN |
1.498 6 |
1.490 5 |
1.466 1 |
1.461 3 |
1.439 1 |
1.446 |
1.457 |
1.467 5 |
1.473 7 |
1.500 0 |
11/2-28 |
UN |
1.498 7 |
1.492 2 |
1.475 5 |
1.471 3 |
1.456 2 |
1.461 |
1.470 |
1.476 8 |
1.482 3 |
1.500 0 |
19/16-6 |
UN |
1.560 1 |
1.541 9 |
1.451 8 |
1.443 6 |
1.361 6 |
1.382 |
1.413 |
1.454 2 |
1.464 8 |
1.562 5 |
19/16-8 |
UN |
1.560 3 |
1.545 3 |
1.479 1 |
1.471 7 |
1.411 5 |
1.427 |
1.452 |
1.481 3 |
1.490 9 |
1.562 5 |
19/16-12 |
UN |
1.560 7 |
1.549 3 |
1.506 6 |
1.500 7 |
1.461 5 |
1.472 |
1.490 |
1.508 4 |
1.516 1 |
1.562 5 |
19/16-16 |
UN |
1.560 9 |
1.551 5 |
1.520 3 |
1.515 1 |
1.486 5 |
1.495 |
1.509 |
1.521 9 |
1.528 7 |
1.562 5 |
19/16-18 |
UNEF |
1.561 0 |
1.552 3 |
1.524 9 |
1.519 9 |
1.494 8 |
1.502 |
1.515 |
1.526 4 |
1.532 9 |
1.562 5 |
19/16-20 |
UN |
1.561 1 |
1.553 0 |
1.528 6 |
1.523 8 |
1.501 6 |
1.508 |
1.520 |
1.530 0 |
1.536 2 |
1.562 5 |
15/8-6 |
UN |
1.622 5 |
1.604 3 |
1.514 2 |
1.506 0 |
1.424 0 |
1.445 |
1.475 |
1.516 7 |
1.527 4 |
1.625 0 |
15/8-8 |
UN |
1.622 8 |
1.607 8 |
1.541 6 |
1.534 2 |
1.474 0 |
1.490 |
1.515 |
1.543 8 |
1.553 5 |
1.625 0 |
15/8-12 |
UN |
1.623 2 |
1.611 8 |
1.569 1 |
4.563 2 |
1.524 0 |
1.535 |
1.553 |
1.570 9 |
1.578 6 |
1.625 0 |
15/8-16 |
UN |
1.623 4 |
1.614 0 |
1.582 8 |
4.577 5 |
1.549 0 |
1.557 |
1.571 |
1.584 4 |
1.591 2 |
1.625 0 |
15/8-18 |
UNEF |
1.623 5 |
1.614 8 |
1.587 4 |
1.582 4 |
1.557 3 |
1.565 |
1.578 |
1.588 9 |
1.595 4 |
1.625 0 |
15/8-20 |
UN |
1.623 6 |
1.615 5 |
1.591 1 |
1.586 3 |
1.564 1 |
1.571 |
1.582 |
1.592 5 |
1.598 7 |
1.625 0 |
111/16-6 |
UN |
1.685 0 |
1.666 8 |
1.576 7 |
1.568 4 |
1.486 5 |
1.507 |
1.538 |
1.579 2 |
1.590 0 |
1.687 5 |
111/16-8 |
UN |
1.685 3 |
1.670 3 |
1.604 1 |
1.596 6 |
1.536 5 |
1.552 |
1.577 |
1.606 3 |
1.616 0 |
1.687 5 |
111/16-12 |
UN |
1.685 7 |
1.674 3 |
1.631 6 |
1.625 7 |
1.586 5 |
1.597 |
1.615 |
1.633 4 |
1.641 1 |
1.687 5 |
111/16-16 |
UN |
1.685 9 |
1.676 5 |
1.645 3 |
1.640 0 |
1.611 5 |
1.620 |
1.634 |
1.646 9 |
1.653 8 |
1.687 5 |
111/16-18 |
UNEF |
1.686 0 |
1.677 3 |
1.649 9 |
1.644 9 |
1.619 8 |
1.627 |
1.640 |
1.651 4 |
1.657 9 |
1.687 5 |
111/16-20 |
UN |
1.686 1 |
1.678 0 |
1.653 6 |
1.648 8 |
1.626 6 |
1.633 |
1.645 |
1.655 0 |
1.661 3 |
1.687 5 |
13/4-5 |
UNC |
1.747 3 |
1.726 8 |
1.617 4 |
1.608 5 |
1.509 1 |
1.533 |
1.567 |
1.620 1 |
1.631 7 |
1.750 0 |
13/4-6 |
UN |
1.747 5 |
1.729 3 |
1.639 2 |
1.630 9 |
1.549 0 |
1.570 |
1.600 |
1.641 7 |
1.652 5 |
1.750 0 |
13/4-8 |
UN |
1.747 7 |
1.732 7 |
1.666 5 |
1.659 0 |
1.598 9 |
1.615 |
1.640 |
1.668 8 |
1.678 6 |
1.750 0 |
13/4-12 |
UN |
1.748 2 |
1.736 8 |
1.694 1 |
1.688 1 |
1.649 0 |
1.660 |
1.678 |
1.695 9 |
1.703 7 |
1.750 0 |
2级标准系列统一螺纹的极限尺寸(1 3/4~3 1/2)
2级标准系列统一螺纹的极限尺寸 |
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
公称直径 -牙数 |
系列 代号 |
|
2B 内螺纹 |
||||||||
大径 d |
中径 d2 |
UNR 小径d3 (参考) |
小径 D1 |
中径 D2 |
大径 D |
||||||
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
||
13/4-16 |
UN |
1.748 4 |
1.739 0 |
1.707 8 |
1.702 5 |
1.674 0 |
1.682 |
1.696 |
1.709 4 |
1.716 3 |
1.750 0 |
13/4-20 |
UN |
1.748 5 |
1.740 4 |
1.716 0 |
1.711 2 |
1.689 0 |
1.696 |
1.707 |
1.717 5 |
1.723 8 |
1.750 0 |
113/16-6 |
UN |
1.810 0 |
1.791 8 |
1.701 7 |
1.693 3 |
1.611 5 |
1.632 |
1.663 |
1.704 2 |
1.715 1 |
1.812 5 |
113/16-8 |
UN |
1.810 2 |
1.795 2 |
1.729 0 |
1.721 4 |
1.661 4 |
1.677 |
1.702 |
1.731 3 |
1.741 2 |
1.812 5 |
113/16-12 |
UN |
1.810 7 |
1.799 3 |
1.756 6 |
1.750 6 |
1.711 5 |
1.722 |
1.740 |
1.758 4 |
1.766 2 |
1.812 5 |
113/16-16 |
UN |
1.810 9 |
1.801 5 |
1.770 3 |
1.765 0 |
1.736 5 |
1.745 |
1.759 |
1.771 9 |
1.778 8 |
1.812 5 |
113/16-20 |
UN |
1.811 0 |
1.802 9 |
1.778 5 |
1.773 6 |
1.751 5 |
1.758 |
1.770 |
1.780 0 |
1.786 3 |
1.812 5 |
17/8-6 |
UN |
1.872 5 |
1.854 3 |
1.764 2 |
1.755 8 |
1.674 0 |
1.695 |
1.725 |
1.766 7 |
1.777 7 |
1.875 0 |
17/8-8 |
UN |
1.872 7 |
1.857 7 |
1.791 5 |
1.783 8 |
1.723 9 |
1.740 |
1.765 |
1.793 8 |
1.803 8 |
1.875 0 |
17/8-12 |
UN |
1.873 2 |
1.861 8 |
1.819 1 |
1.813 1 |
1.774 0 |
1.785 |
1.803 |
1.820 9 |
1.828 7 |
1.875 0 |
17/8-16 |
UN |
1.873 4 |
1.864 0 |
1.832 8 |
1.827 5 |
1.799 0 |
1.807 |
1.821 |
1.834 4 |
1.841 3 |
1.875 0 |
17/8-20 |
UN |
1.873 5 |
1.865 4 |
1.841 0 |
1.836 1 |
1.814 0 |
1.821 |
1.832 |
1.842 5 |
1.848 9 |
1.875 0 |
115/16-6 |
UN |
1.934 9 |
1.916 7 |
1.826 6 |
1.818 1 |
1.736 4 |
1.757 |
1.788 |
1.829 2 |
1.840 3 |
1.937 5 |
115/16-8 |
UN |
1.935 2 |
1.920 2 |
1.854 0 |
1.846 3 |
1.786 4 |
1.802 |
1.827 |
1.856 3 |
1.866 3 |
1.937 5 |
115/16-12 |
UN |
1.935 7 |
1.924 3 |
1.881 6 |
1.875 6 |
1.836 5 |
1.847 |
1.865 |
1.883 4 |
1.891 2 |
1.937 5 |
115/16-16 |
UN |
1.935 9 |
1.926 5 |
1.895 3 |
1.889 9 |
1.861 5 |
1.870 |
1.884 |
1.896 9 |
1.903 9 |
1.937 5 |
115/16-20 |
UN |
1.936 0 |
1.927 9 |
1.903 5 |
1.898 6 |
1.876 5 |
1.883 |
1.895 |
1.905 0 |
1.911 4 |
1.937 5 |
2-41/2 |
UNC |
1.997 1 |
1.975 1 |
1.852 8 |
1.843 3 |
1.732 5 |
1.759 |
1.795 |
1.855 7 |
1.868 1 |
2.000 0 |
2-6 |
UN |
1.997 4 |
1.979 2 |
1.889 1 |
1.880 5 |
1.798 9 |
1.820 |
1.850 |
1.891 7 |
1.902 8 |
2.000 0 |
2-8 |
UN |
1.997 7 |
1.982 7 |
1.916 5 |
1.908 7 |
1.848 9 |
1.865 |
1.890 |
1.918 8 |
1.928 9 |
2.000 0 |
2-12 |
UN |
1.998 2 |
1.986 8 |
1.944 1 |
1.938 0 |
1.899 0 |
1.910 |
1.928 |
1.945 9 |
1.953 8 |
2.000 0 |
2-16 |
UN |
1.998 4 |
1.989 0 |
1.957 8 |
1.952 4 |
1.924 0 |
1.932 |
1.946 |
1.959 4 |
1.966 4 |
2.000 0 |
2-20 |
UN |
1.998 5 |
1.990 4 |
1.966 0 |
1.961 1 |
1.939 0 |
1.946 |
1.957 |
1.967 5 |
1.973 9 |
2.000 0 |
21/8-6 |
UN |
2.122 4 |
2.104 2 |
2.014 1 |
2.005 4 |
1.923 9 |
1.945 |
1.975 |
2.016 7 |
2.028 0 |
2.125 0 |
21/8-8 |
UN |
2.122 6 |
2.107 6 |
2.041 4 |
2.033 5 |
1.973 8 |
1.990 |
2.015 |
2.043 8 |
2.054 0 |
2.125 0 |
21/8-12 |
UN |
2.123 2 |
2.111 8 |
2.069 1 |
2.063 0 |
2.024 0 |
2.035 |
2.053 |
2.070 9 |
2.077 8 |
2.125 0 |
21/8-16 |
UN |
2.123 4 |
2.114 0 |
2.082 8 |
2.077 4 |
2.049 0 |
2.057 |
2.071 |
2.084 4 |
2.091 4 |
2.125 0 |
21/8-20 |
UN |
2.123 5 |
2.115 4 |
2.091 0 |
2.086 0 |
2.064 0 |
2.071 |
2.082 |
2.092 5 |
2.099 0 |
2.125 0 |
21/4-41/2 |
UNC |
2.247 1 |
2.225 1 |
2.102 8 |
2.093 1 |
1.982 5 |
2.009 |
2.045 |
2.105 7 |
2.118 3 |
2.250 0 |
21/4-6 |
UN |
2.247 4 |
2.229 2 |
2.139 1 |
2.130 3 |
2.048 9 |
2.070 |
2.100 |
2.141 7 |
2.153 1 |
2.250 0 |
21/4-8 |
UN |
2.247 6 |
2.232 6 |
2.166 4 |
2.158 4 |
2.098 8 |
2.115 |
2.140 |
2.168 8 |
2.179 2 |
2.250 0 |
21/4-12 |
UN |
2.248 2 |
2.236 8 |
2.194 1 |
2.188 0 |
2.149 0 |
2.160 |
2.178 |
2.195 9 |
2.203 9 |
2.250 0 |
21/4-16 |
UN |
2.248 4 |
2.239 0 |
2.207 8 |
2.202 3 |
2.174 0 |
2.182 |
2.196 |
2.209 4 |
2.216 5 |
2.250 0 |
21/4-20 |
UN |
2.248 5 |
2.240 4 |
2.216 0 |
2.211 0 |
2.189 0 |
2.196 |
2.207 |
2.217 5 |
2.224 0 |
2.250 0 |
23/8-6 |
UN |
2.372 3 |
2.354 1 |
2.264 0 |
2.255 1 |
2.173 8 |
2.195 |
2.225 |
2.266 7 |
2.278 2 |
2.375 0 |
23/8-8 |
UN |
2.3726 |
2.357 6 |
2.291 4 |
2.283 3 |
2.223 8 |
2.240 |
2.265 |
2.293 8 |
2.304 3 |
2.375 0 |
23/8-12 |
UN |
2.373 2 |
2.361 8 |
2.319 1 |
2.312 9 |
2.274 0 |
2.285 |
2.303 |
2.320 9 |
2.328 9 |
2.375 0 |
23/8-16 |
UN |
2.373 4 |
2.364 0 |
2.332 8 |
2.327 3 |
2.299 0 |
2.307 |
2.321 |
2.334 4 |
2.341 5 |
2.375 0 |
23/8-20 |
UN |
2.373 5 |
2.365 4 |
2.341 0 |
2.336 0 |
2.314 0 |
2.321 |
2.332 |
2.342 5 |
2.349 1 |
2.375 0 |
21/2-4 |
UNC |
2.496 9 |
2.473 1 |
2.334 5 |
2.324 1 |
2.199 2 |
2.229 |
2.267 |
2.337 6 |
2.351 1 |
2.500 0 |
21/2-6 |
UN |
2.497 3 |
2.479 1 |
2.389 0 |
2.380 0 |
2.298 8 |
2.320 |
2.350 |
2.391 7 |
2.403 3 |
2.500 0 |
21/2-8 |
UN |
2.497 6 |
2.482 6 |
2.416 4 |
2.408 2 |
2.348 8 |
2.365 |
2.390 |
2.418 8 |
2.429 4 |
2.500 0 |
21/2-12 |
UN |
2.498 1 |
2.486 7 |
2.444 0 |
2.437 8 |
2.398 9 |
2.410 |
2.428 |
2.445 9 |
2.454 0 |
2.500 0 |
21/2-16 |
UN |
2.498 3 |
2.488 9 |
2.457 7 |
2.452 2 |
2.423 9 |
2.432 |
2.446 |
2.459 4 |
2.466 6 |
2.500 0 |
21/2-20 |
UN |
2.498 5 |
2.490 4 |
2.466 0 |
2.460 9 |
2.439 0 |
2.446 |
2.457 |
2.467 5 |
2.474 1 |
2.500 0 |
25/8-6 |
UN |
2.622 3 |
2.604 1 |
2.514 0 |
2.505 0 |
2.423 8 |
2.445 |
2.475 |
2.516 7 |
2.528 5 |
2.625 0 |
25/8-8 |
UN |
2.622 5 |
2.607 5 |
2.541 3 |
2.533 1 |
2.473 7 |
2.490 |
2.515 |
2.543 8 |
2.554 5 |
2.625 0 |
25/8-12 |
UN |
2.623 1 |
2.611 7 |
2.569 0 |
2.562 8 |
2.523 9 |
2.535 |
2.553 |
2.570 9 |
2.579 0 |
2.625 0 |
25/8-16 |
UN |
2.623 3 |
2.613 9 |
2.582 7 |
2.577 1 |
2.548 9 |
2.557 |
2.571 |
2.584 4 |
2.591 6 |
2.625 0 |
25/8-20 |
UN |
2.623 5 |
2.615 4 |
2.591 0 |
2.585 9 |
2.564 0 |
2.571 |
2.582 |
2.592 5 |
2.599 1 |
2.625 0 |
23/4-4 |
UNC |
2.746 8 |
2.723 0 |
2.584 4 |
2.573 9 |
2.449 1 |
2.479 |
2.517 |
2.587 6 |
2.601 3 |
2.750 0 |
23/4-6 |
UN |
2.747 3 |
2.729 1 |
2.639 0 |
2.629 9 |
2.548 8 |
2.570 |
2.600 |
2.641 7 |
2.653 6 |
2.750 0 |
23/4-8 |
UN |
2.747 5 |
2.732 5 |
2.666 3 |
2.658 0 |
2.598 7 |
2.615 |
2.640 |
2.668 8 |
2.679 6 |
2.750 0 |
23/4-12 |
UN |
2.748 1 |
2.736 7 |
2.694 0 |
2.687 7 |
2.648 9 |
2.660 |
2.678 |
2.695 9 |
2.704 0 |
2.750 0 |
23/4-16 |
UN |
2.748 3 |
2.738 9 |
2.707 7 |
2.702 1 |
2.673 9 |
2.682 |
2.696 |
2.709 4 |
2.716 7 |
2.750 0 |
23/4-20 |
UN |
2.748 5 |
2.740 4 |
2.716 0 |
2.710 9 |
2.689 0 |
2.696 |
2.707 |
2.717 5 |
2.724 2 |
2.750 0 |
27/8-6 |
UN |
2.872 2 |
2.854 0 |
2.763 9 |
2.754 7 |
2.673 7 |
2.695 |
2.725 |
2.766 7 |
2.778 7 |
2.875 0 |
27/8-8 |
UN |
2.872 5 |
2.857 5 |
2.791 3 |
2.782 9 |
2.723 7 |
2.740 |
2.765 |
2.793 8 |
2.804 8 |
2.875 0 |
27/8-12 |
UN |
2.873 1 |
2.861 7 |
2.819 0 |
2.812 7 |
2.773 9 |
2.785 |
2.803 |
2.820 9 |
2.829 1 |
2.875 0 |
27/8-16 |
UN |
2.873 3 |
2.863 9 |
2.832 7 |
2.827 1 |
2.798 9 |
2.807 |
2.821 |
2.834 4 |
2.841 7 |
2.875 0 |
27/8-20 |
UN |
2.873 4 |
2.865 3 |
2.840 9 |
2.835 7 |
2.813 9 |
2.821 |
2.832 |
2.842 5 |
2.849 2 |
2.8750 |
3-4 |
UNC |
2.996 8 |
2.973 0 |
2.834 4 |
2.823 7 |
2.699 1 |
2.729 |
2.767 |
2.837 6 |
2.851 5 |
3.000 0 |
3-6 |
UN |
2.997 2 |
2.979 0 |
2.888 9 |
2.879 6 |
2.798 7 |
2.820 |
2.850 |
2.891 7 |
2.903 8 |
3.000 0 |
3-8 |
UN |
2.997 4 |
2.982 4 |
2.916 2 |
2.907 7 |
2.848 6 |
2.865 |
2.890 |
2.918 8 |
2.929 9 |
3.000 0 |
3-12 |
UN |
2.998 1 |
2.986 7 |
2.944 0 |
2.933 7 |
2.898 9 |
2.910 |
2.928 |
2.945 9 |
2.954 1 |
3.000 0 |
3-16 |
UN |
2.998 3 |
2.988 9 |
2.957 7 |
2.952 1 |
2.923 9 |
2.932 |
2.946 |
2.959 4 |
2.966 7 |
3.000 0 |
3-20 |
UN |
2.998 4 |
2.990 3 |
2.965 9 |
2.960 7 |
2.938 9 |
2.946 |
2.957 |
2.967 5 |
2.974 3 |
3.000 0 |
31/8-6 |
UN |
3.122 2 |
3.104 0 |
3.013 9 |
3.004 5 |
2.923 7 |
2.945 |
2.975 |
3.016 7 |
3.028 9 |
3.125 0 |
31/8-8 |
UN |
3.122 4 |
3.107 4 |
3.041 2 |
3.032 6 |
2.973 6 |
2.990 |
3.015 |
3.043 8 |
3.055 0 |
3.125 0 |
31/8-12 |
UN |
3.123 1 |
3.111 7 |
3.069 0 |
3.062 6 |
3.023 9 |
3.035 |
3.053 |
3.070 9 |
3.079 2 |
3.125 0 |
31/8-16 |
UN |
3.123 3 |
3.113 9 |
3.082 7 |
3.077 0 |
3.048 9 |
3.057 |
3.071 |
3.084 4 |
3.091 8 |
3.125 0 |
31/4-4 |
UNC |
3.246 7 |
3.222 9 |
3.084 3 |
3.073 4 |
2.949 0 |
2.979 |
3.017 |
3.087 6 |
3.101 7 |
3.250 0 |
31/4-6 |
UN |
3.247 2 |
3.229 0 |
3.138 9 |
3.129 4 |
3.048 7 |
3.070 |
3.100 |
3.141 7 |
3.154 0 |
3.250 0 |
31/4-8 |
UN |
3.247 4 |
3.232 4 |
3.166 2 |
3.157 5 |
3.098 6 |
3.115 |
3.140 |
3.168 8 |
3.180 1 |
3.250 0 |
31/4-12 |
UN |
3.248 1 |
3.236 7 |
3.194 0 |
3.187 6 |
3.148 9 |
3.160 |
3.178 |
3.195 9 |
3.204 2 |
3.250 0 |
31/4-16 |
UN |
3.248 3 |
3.238 9 |
3.207 7 |
3.202 0 |
3.173 9 |
3.182 |
3.196 |
3.209 4 |
3.216 8 |
3.250 0 |
33/8-6 |
UN |
3.372 1 |
3.353 9 |
3.263 8 |
3.254 3 |
3.173 6 |
3.195 |
3.225 |
3.266 7 |
3.279 1 |
3.375 0 |
33/8-8 |
UN |
3.372 4 |
3.357 4 |
3.291 2 |
3.282 4 |
3.223 6 |
3.240 |
3.265 |
3.293 8 |
3.305 2 |
3.375 0 |
33/8-12 |
UN |
3.373 1 |
3.361 7 |
3.319 0 |
3.312 6 |
3.273 9 |
3.285 |
3.303 |
3.320 9 |
3.329 2 |
3.375 0 |
33/8-16 |
UN |
3.373 3 |
3.363 9 |
3.332 7 |
3.327 0 |
3.298 9 |
3.307 |
3.321 |
3.334 4 |
3.341 9 |
3.375 0 |
31/2-4 |
UNC |
3.496 7 |
3.472 9 |
3.334 3 |
3.323 3 |
3.199 0 |
3.229 |
3.267 |
3.337 6 |
3.351 9 |
3.500 0 |
31/2-6 |
UN |
3.497 1 |
3.478 9 |
3.388 3 |
3.379 2 |
3.298 6 |
3.320 |
3.350 |
3.391 7 |
3.404 2 |
3.500 0 |
31/2-8 |
UN |
3.497 4 |
3.482 4 |
3.416 2 |
3.407 4 |
3.348 6 |
3.365 |
3.390 |
3.418 8 |
3.430 3 |
3.500 0 |
31/2-12 |
UN |
3.498 1 |
3.486 7 |
3.444 0 |
3.437 6 |
3.398 9 |
3.410 |
3.428 |
3.445 9 |
3.454 3 |
3.500 0 |
2级标准系列统一螺纹的极限尺寸(3 1/2~6)
2级标准系列统一螺纹的极限尺寸 |
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
公称直径 -牙数 |
系列 代号 |
|
2B 内螺纹 |
||||||||
大径 d |
中径 d2 |
UNR 小径d3 (参考) |
小径 D1 |
中径 D2 |
大径 D |
||||||
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
||
31/2-16 |
UN |
3.498 3 |
3.488 9 |
3.457 7 |
3.451 9 |
3.423 9 |
3.432 |
3.446 |
3.459 4 |
3.466 9 |
3.500 0 |
35/8-6 |
UN |
3.622 1 |
3.603 9 |
3.513 8 |
3.504 1 |
3.423 6 |
3.445 |
3.475 |
3.516 7 |
3.529 3 |
3.625 0 |
35/8-8 |
UN |
3.622 3 |
3.607 3 |
3.541 1 |
3.532 2 |
3.473 5 |
3.490 |
3.515 |
3.543 8 |
3.555 4 |
3.625 0 |
35/8-12 |
UN |
3.623 1 |
3.611 7 |
3.569 0 |
3.562 5 |
3.523 9 |
3.535 |
3.553 |
3.570 9 |
3.579 3 |
3.625 0 |
35/8-16 |
UN |
3.623 3 |
3.613 9 |
3.582 7 |
3.576 9 |
3.548 9 |
3.557 |
3.571 |
3.584 4 |
3.591 9 |
3.625 0 |
33/4-4 |
UNC |
3.746 6 |
3.722 8 |
3.584 2 |
3.573 0 |
3.448 9 |
3.479 |
3.517 |
3.587 6 |
3.602 1 |
3.750 0 |
33/4-6 |
UN |
3.747 1 |
3.728 9 |
3.638 8 |
3.629 0 |
3.548 6 |
3.570 |
3.600 |
3.641 7 |
3.654 4 |
3.750 0 |
33/4-8 |
UN |
3.747 3 |
3.732 3 |
3.666 1 |
3.657 1 |
3.598 5 |
3.615 |
3.640 |
3.668 8 |
3.680 5 |
3.750 0 |
33/4-12 |
UN |
3.748 1 |
3.736 7 |
3.694 0 |
3.687 5 |
3.648 9 |
3.660 |
3.678 |
3.695 9 |
3.704 3 |
3.750 0 |
33/4-16 |
UN |
3.748 3 |
3.738 9 |
3.707 7 |
3.701 9 |
3.673 9 |
3.682 |
3.969 |
3.709 4 |
3.717 0 |
3.750 0 |
37/8-6 |
UN |
3.872 0 |
3.853 8 |
3.763 7 |
3.753 8 |
3.673 5 |
3.695 |
3.725 |
3.766 7 |
3.779 5 |
3.875 0 |
37/8-8 |
UN |
3.872 3 |
3.857 3 |
3.791 1 |
3.782 0 |
3.723 5 |
3.740 |
3.765 |
3.793 8 |
3.805 6 |
3.875 0 |
37/8-12 |
UN |
3.873 0 |
3.861 6 |
3.818 9 |
3.812 4 |
3.773 8 |
3.785 |
3.803 |
3.820 9 |
3.829 4 |
3.875 0 |
37/8-16 |
UN |
3.873 2 |
3.863 8 |
3.832 6 |
3.826 8 |
3.798 8 |
3.807 |
3.821 |
3.834 4 |
3.842 0 |
3.875 0 |
4-4 |
UNC |
3.996 6 |
3.972 8 |
3.834 2 |
3.822 9 |
3.698 9 |
3.729 |
3.767 |
3.837 6 |
3.852 3 |
4.000 0 |
4-6 |
UN |
3.997 0 |
3.978 8 |
3.888 7 |
3.878 8 |
3.798 5 |
3.820 |
3.850 |
3.891 7 |
3.904 6 |
4.000 0 |
4-8 |
UN |
3.997 3 |
3.982 3 |
3.916 1 |
3.907 0 |
3.848 5 |
3.865 |
3.890 |
3.918 8 |
3.930 7 |
4.000 0 |
4-12 |
UN |
3.998 0 |
3.986 6 |
3.943 9 |
3.937 4 |
3.898 8 |
3.910 |
3.928 |
3.945 9 |
3.954 4 |
4.000 0 |
4-16 |
UN |
3.998 2 |
3.988 8 |
3.957 6 |
3.951 7 |
3.923 8 |
3.932 |
3.946 |
3.959 4 |
3.967 0 |
4.000 0 |
41/8-6 |
UN |
4.122 0 |
4.103 8 |
4.013 7 |
4.003 7 |
3.923 5 |
3.945 |
3.975 |
4.016 7 |
4.029 7 |
4.125 0 |
41/8-8 |
UN |
4.122 2 |
4.107 2 |
4.041 0 |
4.031 8 |
3.973 4 |
3.990 |
4.015 |
4.043 8 |
4.058 8 |
4.125 0 |
41/8-12 |
UN |
4.123 0 |
4.111 6 |
4.068 9 |
4.062 3 |
4.023 8 |
4.035 |
4.053 |
4.070 9 |
4.079 4 |
4.125 0 |
41/8-16 |
UN |
4.123 2 |
4.113 8 |
4.082 6 |
4.076 7 |
4.048 8 |
4.057 |
4.071 |
4.084 4 |
4.092 1 |
4.125 0 |
41/4-4 |
UN |
4.246 6 |
4.222 8 |
4.084 2 |
4.072 7 |
3.948 9 |
3.979 |
4.017 |
4.087 6 |
4.102 5 |
4.250 0 |
41/4-6 |
UN |
4.247 0 |
4.228 8 |
4.138 7 |
4.128 6 |
4.048 5 |
4.070 |
4.100 |
4.141 7 |
4.154 8 |
4.250 0 |
41/4-8 |
UN |
4.247 2 |
4.232 2 |
4.166 0 |
4.156 7 |
4.098 4 |
4.115 |
4.140 |
4.168 8 |
4.180 9 |
4.250 0 |
41/4-12 |
UN |
4.248 0 |
4.236 6 |
4.193 9 |
4.187 3 |
4.148 8 |
4.160 |
4.178 |
4.195 9 |
4.204 5 |
4.250 0 |
41/4-16 |
UN |
4.248 2 |
4.238 8 |
4.207 6 |
4.201 7 |
4.173 8 |
4.182 |
4.196 |
4.209 4 |
4.217 1 |
4.250 0 |
43/8-6 |
UN |
4.372 0 |
4.353 8 |
4.263 7 |
4.253 6 |
4.173 5 |
4.195 |
4.225 |
4.266 7 |
4.279 9 |
4.375 0 |
43/8-8 |
UN |
4.372 2 |
4.357 2 |
4.291 0 |
4.281 7 |
4.223 4 |
4.240 |
4.265 |
4.293 8 |
4.305 9 |
4.375 0 |
43/8-12 |
UN |
4.373 0 |
4.361 6 |
4.318 9 |
4.312 3 |
4.273 8 |
4.285 |
4.303 |
4.320 9 |
4.329 5 |
4.375 0 |
43/8-16 |
UN |
4.373 2 |
4.363 8 |
4.332 6 |
4.326 7 |
4.298 8 |
4.307 |
4.321 |
4.334 4 |
4.342 1 |
4.375 0 |
41/2-4 |
UN |
4.496 5 |
4.472 7 |
4.334 1 |
4.322 5 |
4.198 8 |
4.229 |
4.267 |
4.337 6 |
4.352 7 |
4.500 0 |
41/2-6 |
UN |
4.496 9 |
4.478 7 |
4.388 6 |
4.378 4 |
4.298 4 |
4.320 |
4.350 |
4.391 7 |
4.405 0 |
4.500 0 |
41/2-8 |
UN |
4.497 2 |
4.482 2 |
4.416 0 |
4.406 6 |
4.348 4 |
4.365 |
4.390 |
4.418 8 |
4.431 0 |
4.500 0 |
41/2-12 |
UN |
4.498 0 |
4.486 6 |
4.443 9 |
4.437 3 |
4.398 8 |
4.410 |
4.428 |
4.445 9 |
4.454 5 |
4.500 0 |
41/2-16 |
UN |
4.498 2 |
4.488 8 |
4.457 6 |
4.451 6 |
4.423 8 |
4.432 |
4.446 |
4.459 4 |
4.467 2 |
4.500 0 |
45/8-6 |
UN |
4.621 9 |
4.603 7 |
4.513 6 |
4.503 3 |
4.423 4 |
4.445 |
4.475 |
4.516 7 |
4.530 0 |
4.625 0 |
45/8-8 |
UN |
4.622 2 |
4.607 2 |
4.541 0 |
4.531 5 |
4.473 4 |
4.490 |
4.515 |
4.543 8 |
4.556 1 |
4.625 0 |
45/8-12 |
UN |
4.623 0 |
4.611 6 |
4.568 9 |
4.562 2 |
4.523 8 |
4.535 |
4.553 |
4.570 9 |
4.579 6 |
4.625 0 |
45/8-16 |
UN |
4.623 2 |
4.613 8 |
4.582 6 |
4.576 6 |
4.548 8 |
4.557 |
4.571 |
4.584 4 |
4.592 2 |
4.625 0 |
43/4-4 |
UN |
4.746 5 |
4.722 7 |
4.584 1 |
4.572 4 |
4.448 8 |
4.479 |
4.517 |
4.587 6 |
4.602 9 |
4.750 0 |
43/4-6 |
UN |
4.746 9 |
4.728 7 |
4.638 6 |
4.628 3 |
4.548 4 |
4.570 |
4.600 |
4.641 7 |
4.655 1 |
4.750 0 |
43/4-8 |
UN |
4.747 1 |
4.732 1 |
4.665 9 |
4.656 4 |
4.598 3 |
4.615 |
4.640 |
4.668 8 |
4.681 2 |
4.750 0 |
43/4-12 |
UN |
4.748 0 |
4.736 6 |
4.693 9 |
4.687 2 |
4.648 8 |
4.660 |
4.678 |
4.695 9 |
4.704 6 |
4.750 0 |
43/4-16 |
UN |
4.748 2 |
7.738 8 |
4.707 6 |
4.701 6 |
4.673 8 |
4.682 |
4.696 |
4.709 4 |
4.7172 |
4.750 0 |
47/8-6 |
UN |
4.871 9 |
4.853 7 |
4.763 6 |
4.753 2 |
4.673 4 |
4.695 |
4.725 |
4.766 7 |
4.780 2 |
4.875 0 |
47/8-8 |
UN |
4.872 1 |
4.857 1 |
4.790 9 |
4.781 3 |
4.723 3 |
4.740 |
4.765 |
4.793 8 |
4.806 3 |
4.875 0 |
47/8-12 |
UN |
4.873 0 |
4.861 6 |
4.818 9 |
4.812 2 |
4.773 8 |
4.785 |
4.803 |
4.820 9 |
4.829 6 |
4.875 0 |
47/8-16 |
UN |
4.873 2 |
4.863 8 |
4.832 6 |
4.826 6 |
4.798 8 |
4.807 |
4.821 |
4.834 4 |
4.842 2 |
4.875 0 |
5-4 |
UN |
4.996 4 |
4.972 6 |
4.834 0 |
4.822 1 |
4.698 7 |
4.729 |
4.767 |
4.837 6 |
4.853 0 |
5.000 0 |
5-6 |
UN |
4.996 9 |
4.978 7 |
4.888 6 |
4.878 1 |
4.798 4 |
4.820 |
4.850 |
4.891 7 |
4.905 3 |
5.000 0 |
5-8 |
UN |
4.997 1 |
4.982 1 |
4.915 9 |
4.906 2 |
4.848 3 |
4.865 |
4.890 |
4.918 8 |
4.931 4 |
5.000 0 |
5-12 |
UN |
4.998 0 |
4.986 6 |
4.943 9 |
4.937 2 |
4.898 8 |
4.910 |
4.928 |
4.945 9 |
4.954 6 |
5.000 0 |
5-16 |
UN |
4.998 2 |
4.988 8 |
4.957 6 |
4.951 5 |
4.923 8 |
4.932 |
4.946 |
4.959 4 |
4.967 3 |
5.000 0 |
51/8-6 |
UN |
5.121 8 |
5.103 6 |
5.013 5 |
5.003 0 |
4.923 3 |
4.945 |
4.975 |
5.016 7 |
5.030 4 |
5.125 0 |
51/8-8 |
UN |
5.122 1 |
5.107 1 |
5.040 9 |
5.031 2 |
4.973 3 |
4.990 |
5.015 |
5.043 8 |
5.056 5 |
5.125 0 |
51/8-12 |
UN |
5.123 0 |
5.111 6 |
5.068 9 |
5.062 2 |
5.023 8 |
5.035 |
5.053 |
5.070 9 |
5.079 7 |
5.125 0 |
51/8-16 |
UN |
5.123 2 |
5.113 8 |
5.082 6 |
5.076 5 |
5.048 8 |
5.057 |
5.071 |
5.084 4 |
5.0923 |
5.125 0 |
51/4-4 |
UN |
5.246 4 |
5.222 6 |
5.084 0 |
5.072 0 |
4.948 7 |
4.979 |
5.017 |
5.087 6 |
5.103 2 |
5.250 0 |
51/4-6 |
UN |
5.246 8 |
5.228 6 |
5.138 5 |
5.127 9 |
5.048 3 |
5.070 |
5.100 |
5.141 7 |
5.155 5 |
5.250 0 |
51/4-8 |
UN |
5.247 1 |
5.232 1 |
5.165 9 |
5.156 1 |
5.098 3 |
5.115 |
5.140 |
5.168 8 |
5.181 5 |
5.250 0 |
51/4-12 |
UN |
5.248 0 |
5.236 6 |
5.193 9 |
5.187 1 |
5.148 8 |
5.160 |
5.178 |
5.195 9 |
5.204 7 |
5.250 0 |
51/4-16 |
UN |
5.248 2 |
5.238 8 |
5.207 6 |
5.204 5 |
5.173 8 |
5.182 |
5.196 |
5.209 4 |
5.217 3 |
5.250 0 |
53/8-6 |
UN |
5.371 8 |
5.353 6 |
5.263 5 |
5.252 9 |
5.173 3 |
5.195 |
5.225 |
5.266 7 |
5.280 5 |
5.375 0 |
53/8-8 |
UN |
5.372 0 |
5.357 0 |
5.290 8 |
5.280 9 |
5.223 2 |
5.240 |
5.265 |
5.293 8 |
5.306 6 |
5.375 0 |
53/8-12 |
UN |
5.373 0 |
5.361 6 |
5.318 9 |
5.312 1 |
5.273 8 |
5.285 |
5.303 |
5.320 9 |
5.3297 |
5.375 0 |
53/8-16 |
UN |
5.373 2 |
5.363 8 |
5.332 6 |
5.326 5 |
5.298 8 |
5.307 |
5.321 |
5.334 4 |
5.342 3 |
5.375 0 |
51/2-4 |
UN |
5.496 4 |
5.472 6 |
5.334 0 |
5.321 9 |
5.198 7 |
5.229 |
5.267 |
5.337 6 |
5.353 4 |
5.500 0 |
51/2-6 |
UN |
5.496 8 |
5.478 6 |
5.388 5 |
5.377 8 |
5.298 3 |
5.320 |
5.350 |
5.391 7 |
5.405 6 |
5.500 0 |
51/2-8 |
UN |
5.497 0 |
5.482 0 |
5.415 8 |
5.405 9 |
5.348 2 |
5.365 |
5.390 |
5.418 8 |
5.431 7 |
5.500 0 |
51/2-12 |
UN |
5.498 0 |
5.486 6 |
5.443 9 |
5.437 1 |
5.398 8 |
5.410 |
5.428 |
5.445 9 |
5.454 8 |
5.500 0 |
51/2-16 |
UN |
5.498 2 |
5.488 8 |
5.457 6 |
5.451 5 |
5.423 8 |
5.432 |
5.446 |
5.459 4 |
5.467 4 |
5.500 0 |
55/8-6 |
UN |
5.621 8 |
5.603 6 |
5.513 5 |
5.502 7 |
5.423 3 |
5.445 |
5.475 |
5.516 7 |
5.530 7 |
5.625 0 |
55/8-8 |
UN |
5.622 0 |
5.607 0 |
5.540 8 |
5.530 8 |
5.473 2 |
5.490 |
5.515 |
5.543 8 |
5.556 8 |
5.625 0 |
55/8-12 |
UN |
5.623 0 |
5.611 6 |
5.5689 |
5.562 1 |
5.523 8 |
5.535 |
5.553 |
5.570 9 |
5.579 8 |
5.625 0 |
55/8-16 |
UN |
5.623 2 |
5.613 8 |
5.582 6 |
5.576 4 |
5.548 8 |
5.557 |
5.571 |
5.584 4 |
5.592 4 |
5.625 0 |
53/4-4 |
UN |
5.746 3 |
5.722 5 |
5.583 9 |
5.571 7 |
5.448 6 |
5.479 |
5.517 |
5.587 6 |
5.603 5 |
5.750 0 |
53/4-6 |
UN |
5.746 8 |
5.728 6 |
5.638 5 |
5.627 7 |
5.548 3 |
5.570 |
5.600 |
5.641 7 |
5.655 8 |
5.750 0 |
53/4-8 |
UN |
5.747 0 |
5.732 0 |
5.665 8 |
5.655 8 |
5.598 2 |
5.615 |
5.640 |
5.668 8 |
5.681 8 |
5.750 0 |
53/4-12 |
UN |
5.747 9 |
5.736 5 |
5.693 8 |
5.687 0 |
5.648 7 |
5.660 |
5.678 |
5.695 9 |
5.704 8 |
5.750 0 |
53/4-16 |
UN |
5.748 1 |
5.738 7 |
5.707 5 |
5.701 3 |
5.673 7 |
5.682 |
5.696 |
5.709 4 |
5.717 4 |
5.750 0 |
57/8-6 |
UN |
5.871 7 |
5.853 5 |
5.763 4 |
5.752 5 |
5.673 2 |
5.695 |
5.725 |
5.766 7 |
5.780 9 |
5.875 0 |
57/8-8 |
UN |
5.872 0 |
5.857 0 |
5.790 8 |
5.780 7 |
5.723 2 |
5.740 |
5.765 |
5.793 8 |
5.806 9 |
5.875 0 |
57/8-12 |
UN |
5.872 9 |
5.861 5 |
5.818 8 |
5.811 9 |
5.773 7 |
5.785 |
5.803 |
5.820 9 |
5.829 8 |
5.875 0 |
57/8-16 |
UN |
5.873 1 |
5.863 7 |
5.832 5 |
5.826 3 |
5.798 7 |
5.807 |
5.821 |
5.834 4 |
5.842 5 |
5.875 0 |
6-4 |
UN |
5.996 3 |
5.972 5 |
5.833 9 |
5.821 5 |
5.698 6 |
5.729 |
5.767 |
5.837 6 |
5.853 7 |
6.000 0 |
6-6 |
UN |
5.996 7 |
5.978 5 |
5.888 4 |
5.877 5 |
5.798 2 |
5.820 |
5.850 |
5.891 7 |
5.905 9 |
6.000 0 |
6-8 |
UN |
5.997 0 |
5.982 0 |
5.915 8 |
5.905 7 |
5.848 2 |
5.865 |
5.890 |
5.918 8 |
5.932 0 |
6.000 0 |
6-12 |
UN |
5.997 9 |
5.986 5 |
5.943 8 |
5.936 9 |
5.898 7 |
5.910 |
5.928 |
5.945 9 |
5.954 9 |
6.000 0 |
6-16 |
UN |
5998 1 |
5.988 7 |
5.957 5 |
5.951 3 |
5.923 7 |
5.932 |
5.946 |
5.959 4 |
5.987 5 |
6.000 0 |
3级标准系列统一螺纹的极限尺寸(0~15/16)
3级标准系列统一螺纹的极限尺寸 |
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
公称直径 -牙数 |
系列 代号 |
|
3B 内螺纹 |
||||||||
大径 d |
中径 d2 |
UNR 小径d3 (参考) |
小径 D1 |
中径 D2 |
大径 D |
||||||
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
||
0-80 |
UNF |
0.0600 |
0.0568 |
0.0519 |
0.0506 |
0.0451 |
0.0465 |
0.0514 |
0.0519 |
0.0536 |
0.0600 |
1-64 |
UNC |
0.0730 |
0.0692 |
0.0629 |
0.0614 |
0.0544 |
0.0561 |
0.0622 |
0.0629 |
0.0648 |
0.0730 |
1-72 |
UNF |
0.0730 |
0.0695 |
0.0640 |
0.0626 |
0.0565 |
0.0580 |
0.0634 |
0.0640 |
0.0659 |
0.0730 |
2-56 |
UNC |
0.0860 |
0.0819 |
0.0744 |
0.0728 |
0.0647 |
0.0667 |
0.0737 |
0.0744 |
0.0765 |
0.0860 |
2-64 |
UNF |
0.0860 |
0.0822 |
0.0759 |
0.0744 |
0.0674 |
0.0691 |
0.0752 |
0.0759 |
0.0779 |
0.0860 |
3-48 |
UNC |
0.0990 |
0.0945 |
0.0855 |
0.0838 |
0.0742 |
0.0764 |
0.0845 |
0.0855 |
0.0877 |
0.0990 |
3-56 |
UNF |
0.0990 |
0.0949 |
0.0874 |
0.0858 |
0.0777 |
0.0797 |
0.0865 |
0.0874 |
0.0895 |
0.0990 |
4-40 |
UNC |
0.1120 |
0.1069 |
0.0958 |
0.0939 |
0.0822 |
0.0849 |
0.0939 |
0.0958 |
0.0982 |
0.1120 |
4-48 |
UNF |
0.1120 |
0.1075 |
0.0985 |
0.0967 |
0.0872 |
0.0894 |
0.0968 |
0.0985 |
0.1008 |
0.1120 |
5-40 |
UNC |
0.1250 |
0.1199 |
0.1088 |
0.1069 |
0.0952 |
0.0979 |
0.1062 |
0.1088 |
0.1113 |
0.1250 |
5-44 |
UNF |
0.1250 |
0.1202 |
0.1102 |
0.1083 |
0.0979 |
0.1004 |
0.1079 |
0.1102 |
0.1126 |
0.1250 |
6-32 |
UNC |
0.1380 |
0.1320 |
0.1177 |
0.1156 |
0.1008 |
0.1040 |
0.1139 |
0.1177 |
0.1204 |
0.1380 |
6-40 |
UNF |
0.1380 |
0.1329 |
0.1218 |
0.1198 |
0.1082 |
0.1110 |
0.1186 |
0.1218 |
0.1243 |
0.1380 |
8-32 |
UNC |
0.1640 |
0.1580 |
0.1437 |
0.1415 |
0.1268 |
0.1300 |
0.1388 |
0.1437 |
0.1465 |
0.1640 |
8-36 |
UNF |
0.1640 |
0.1585 |
0.1460 |
0.1439 |
0.1309 |
0.1340 |
0.1416 |
0.1460 |
0.1487 |
0.1640 |
10-24 |
UNC |
0.1900 |
0.1828 |
0.1629 |
0.1604 |
0.1404 |
0.1450 |
0.1555 |
0.1629 |
0.1661 |
0.1900 |
10-32 |
UNF |
0.1900 |
0.1840 |
0.1697 |
0.1674 |
0.1528 |
0.1560 |
0.1641 |
0.1697 |
0.1726 |
0.1900 |
12-24 |
UNC |
0.2160 |
0.2088 |
0.1889 |
0.1863 |
0.1664 |
0.1710 |
0.1807 |
0.1889 |
0.1922 |
0.2160 |
12-28 |
UNF |
0.2160 |
0.2095 |
0.1928 |
0.1904 |
0.1735 |
0.1770 |
0.1857 |
0.1928 |
0.1959 |
0.2160 |
12-32 |
UNEF |
0.2160 |
0.2100 |
0.1957 |
0.1933 |
0.1788 |
0.1820 |
0.1895 |
0.1957 |
0.1988 |
0.2160 |
1/4-20 |
UNC |
0.2500 |
0.2419 |
0.2175 |
0.2147 |
0.1905 |
0.1960 |
0.2067 |
0.2175 |
0.2211 |
0.2500 |
1/4-28 |
UNF |
0.2500 |
0.2435 |
0.2268 |
0.2243 |
0.2075 |
0.2110 |
0.2190 |
0.2268 |
0.2300 |
0.2500 |
1/4-32 |
UNEF |
0.2500 |
0.2440 |
0.2297 |
0.2273 |
0.2128 |
0.2160 |
0.2229 |
0.2297 |
0.2328 |
0.2500 |
5/16-18 |
UNC |
0.3125 |
0.3038 |
0.2764 |
0.2734 |
0.2463 |
0.2520 |
0.2630 |
0.2764 |
0.2803 |
0.3125 |
5/16-20 |
UN |
0.3125 |
0.3044 |
0.2800 |
0.2770 |
0.2530 |
0.2580 |
0.2680 |
0.2800 |
0.2840 |
0.3125 |
5/16-24 |
UNF |
0.3125 |
0.3053 |
0.2854 |
0.2827 |
0.2629 |
0.2670 |
0.2754 |
0.2854 |
0.2890 |
0.3125 |
5/16-28 |
UN |
0.3125 |
0.3060 |
0.2893 |
0.2867 |
0.2700 |
0.2740 |
0.2807 |
0.2893 |
0.2927 |
0.3125 |
5/16-32 |
UNEF |
0.3125 |
0.3065 |
0.2922 |
0.2897 |
0.2753 |
0.2790 |
0.5746 |
0.2922 |
0.2954 |
0.3125 |
3/8-16 |
UNC |
0.3750 |
0.3656 |
0.3344 |
0.3311 |
0.3006 |
0.3070 |
0.3182 |
0.3344 |
0.3387 |
0.3750 |
3/8-20 |
UN |
0.3750 |
0.3669 |
0.3425 |
0.3394 |
0.3155 |
0.3210 |
0.3297 |
0.3425 |
0.3465 |
0.3750 |
3/8-24 |
UNF |
0.3750 |
0.3678 |
0.3479 |
0.3450 |
0.3254 |
0.3300 |
0.3372 |
0.3479 |
0.3516 |
0.3750 |
3/8-28 |
UN |
0.3750 |
0.3685 |
0.3518 |
0.3491 |
0.3325 |
0.3360 |
0.3426 |
0.3518 |
0.3553 |
0.3750 |
3/8-32 |
UNEF |
0.3750 |
0.3690 |
0.3547 |
0.3522 |
0.3378 |
0.3410 |
0.3469 |
0.3547 |
0.3580 |
0.3750 |
7/16-14 |
UNC |
0.4375 |
0.4272 |
0.3911 |
0.3876 |
0.3524 |
0.3600 |
0.3717 |
0.3911 |
0.3957 |
0.4375 |
7/16-16 |
UN |
0.4375 |
0.4281 |
0.3969 |
0.3934 |
0.3631 |
0.3700 |
0.3800 |
0.3969 |
0.4014 |
0.4375 |
7/16-20 |
UNF |
0.4375 |
0.4294 |
0.4050 |
0.4019 |
0.3780 |
0.3830 |
0.3916 |
0.4050 |
0.4091 |
0.4375 |
7/16-28 |
UNEF |
0.4375 |
0.4310 |
0.4143 |
0.4116 |
0.3950 |
0.3990 |
0.4051 |
0.4143 |
0.4178 |
0.4375 |
7/16-32 |
UN |
0.4375 |
0.4315 |
0.4172 |
0.4146 |
0.4003 |
0.4040 |
0.4094 |
0.4172 |
0.4205 |
0.4375 |
1/2-13 |
UNC |
0.5000 |
0.4891 |
0.4500 |
0.4463 |
0.4084 |
0.4170 |
0.4284 |
0.4500 |
0.4548 |
0.5000 |
1/2-16 |
UN |
0.5000 |
0.4906 |
0.4594 |
0.4559 |
0.4256 |
0.4320 |
0.4420 |
0.4594 |
0.4640 |
0.5000 |
1/2-20 |
UNF |
0.5000 |
0.4919 |
0.4675 |
0.4643 |
0.4405 |
0.4460 |
0.4537 |
0.4675 |
0.4717 |
0.5000 |
1/2-28 |
UNEF |
0.5000 |
0.4935 |
0.4768 |
0.4740 |
0.4575 |
0.4610 |
0.4676 |
0.4768 |
0.4804 |
0.5000 |
1/2-32 |
UN |
0.5000 |
0.4940 |
0.4797 |
0.4771 |
0.4628 |
0.4660 |
0.4719 |
0.4797 |
0.4831 |
0.5000 |
9/16-12 |
UNC |
0.5625 |
0.5511 |
0.5084 |
0.5045 |
0.4633 |
0.4720 |
0.4843 |
0.5084 |
0.5135 |
0.5625 |
9/16-16 |
UN |
0.5625 |
0.5531 |
0.5219 |
0.5184 |
0.4881 |
0.4950 |
0.5041 |
0.5219 |
0.5265 |
0.5625 |
9/16-18 |
UNF |
0.5625 |
0.5538 |
0.5264 |
0.5230 |
0.4963 |
0.5020 |
0.5106 |
0.5264 |
0.5308 |
0.5625 |
9/16-20 |
UN |
0.5625 |
0.5544 |
0.5300 |
0.5268 |
0.5030 |
0.5080 |
0.5161 |
0.5300 |
0.5342 |
0.5625 |
9/16-24 |
UNEF |
0.5625 |
0.5553 |
0.5354 |
0.5324 |
0.5129 |
0.5170 |
0.5244 |
0.5354 |
0.5393 |
0.5625 |
9/16-28 |
UN |
0.5625 |
0.5560 |
0.5393 |
0.5365 |
0.5200 |
0.5240 |
0.5301 |
0.5393 |
0.5429 |
0.5625 |
9/16-32 |
UN |
0.5625 |
0.5565 |
0.5422 |
0.5396 |
0.5253 |
0.5290 |
0.5344 |
0.5422 |
0.5456 |
0.5625 |
5/8-11 |
UNC |
0.6250 |
0.6129 |
0.5660 |
0.5619 |
0.5167 |
0.5270 |
0.5391 |
0.5660 |
0.5714 |
0.6250 |
5/8-12 |
UN |
0.6250 |
0.6136 |
0.5709 |
0.5668 |
0.5258 |
0.5350 |
0.5463 |
0.5709 |
0.5762 |
0.6250 |
5/8-16 |
UN |
0.6250 |
0.6156 |
0.5844 |
0.5808 |
0.5506 |
0.5570 |
0.5662 |
0.5844 |
0.5890 |
0.6250 |
5/8-18 |
UNF |
0.6250 |
0.6163 |
0.5889 |
0.5854 |
0.5588 |
0.5650 |
0.5730 |
0.5889 |
0.5934 |
0.6250 |
5/8-20 |
UN |
0.6250 |
0.6169 |
0.5925 |
0.5893 |
0.5655 |
0.5710 |
0.5786 |
0.5925 |
0.5967 |
0.6250 |
5/8-24 |
UNEF |
0.6250 |
0.6178 |
0.5979 |
0.5949 |
0.5754 |
0.5800 |
0.5869 |
0.5979 |
0.6018 |
0.6250 |
5/8-28 |
UN |
0.6250 |
0.6185 |
0.6018 |
0.5990 |
0.5825 |
0.5860 |
0.5926 |
0.6018 |
0.6055 |
0.6250 |
5/8-32 |
UN |
0.6250 |
0.6190 |
0.6047 |
0.6020 |
0.5878 |
0.5910 |
0.5969 |
0.6047 |
0.6082 |
0.6250 |
11/16-12 |
UN |
0.6875 |
0.6761 |
0.6334 |
0.6293 |
0.5883 |
0.5970 |
0.6085 |
0.6334 |
0.6387 |
0.6875 |
11/16-16 |
UN |
0.6875 |
0.6781 |
0.6469 |
0.6433 |
0.6131 |
0.6200 |
0.6284 |
0.6469 |
0.6516 |
0.6875 |
11/16-20 |
UN |
0.6875 |
0.6794 |
0.6550 |
0.6517 |
0.6280 |
0.6330 |
0.6411 |
0.6550 |
0.6593 |
0.6875 |
11/16-24 |
UNEF |
0.6875 |
0.6803 |
0.6604 |
0.6574 |
0.6379 |
0.6420 |
0.6494 |
0.6604 |
0.6643 |
0.6875 |
11/16-28 |
UN |
0.6875 |
0.6810 |
0.6643 |
0.6614 |
0.6450 |
0.6490 |
0.6551 |
0.6643 |
0.6680 |
0.6875 |
11/16-32 |
UN |
0.6875 |
0.6815 |
0.6672 |
0.6645 |
0.6503 |
0.6540 |
0.6594 |
0.6672 |
0.6707 |
0.6875 |
3/4-10 |
UNC |
0.7500 |
0.7371 |
0.6850 |
0.6806 |
0.6309 |
0.6420 |
0.6545 |
0.6850 |
0.6907 |
0.7500 |
3/4-12 |
UN |
0.7500 |
0.7386 |
0.6959 |
0.6918 |
0.6508 |
0.6600 |
0.6707 |
0.6959 |
0.7013 |
0.7500 |
3/4-16 |
UNF |
0.7500 |
0.7406 |
0.7094 |
0.7056 |
0.6756 |
0.6820 |
0.6909 |
0.7094 |
0.7143 |
0.7500 |
3/4-20 |
UNEF |
0.7500 |
0.7419 |
0.7175 |
0.7142 |
0.6905 |
0.6960 |
0.7036 |
0.7175 |
0.7218 |
0.7500 |
3/4-28 |
UN |
0.7500 |
0.7435 |
0.7268 |
0.7239 |
0.7075 |
0.7110 |
0.7176 |
0.7268 |
0.7305 |
0.7500 |
3/4-32 |
UN |
0.7500 |
0.7440 |
0.7297 |
0.7270 |
0.7128 |
0.7160 |
0.7219 |
0.7297 |
0.7333 |
0.7500 |
13/16-12 |
UN |
0.8125 |
0.8011 |
0.7584 |
0.7542 |
0.7133 |
0.7220 |
0.7329 |
0.7584 |
0.7638 |
0.8125 |
13/16-16 |
UN |
0.8125 |
0.8031 |
0.7719 |
0.7682 |
0.7381 |
0.7450 |
0.7534 |
0.7719 |
0.7767 |
0.8125 |
13/16-20 |
UNEF |
0.8125 |
0.8044 |
0.7800 |
0.7767 |
0.7530 |
0.7580 |
0.7661 |
0.7800 |
0.7843 |
0.8125 |
13/16-28 |
UN |
0.8125 |
0.8060 |
0.7893 |
0.7864 |
0.7700 |
0.7740 |
0.7801 |
0.7893 |
0.7931 |
0.8125 |
13/16-32 |
UN |
0.8125 |
0.8065 |
0.7922 |
0.7894 |
0.7753 |
0.7790 |
0.7844 |
0.7922 |
0.7958 |
0.8125 |
7/8-9 |
UNC |
0.8750 |
0.8611 |
0.8028 |
0.7981 |
0.7427 |
0.7550 |
0.7681 |
0.8028 |
0.8089 |
0.8750 |
7/8-12 |
UN |
0.8750 |
0.8636 |
0.8209 |
0.8167 |
0.7758 |
0.7850 |
0.7952 |
0.8209 |
0.8264 |
0.8750 |
7/8-14 |
UNF |
0.8750 |
0.8647 |
0.8286 |
0.8245 |
0.7899 |
0.7980 |
0.8067 |
0.8286 |
0.8339 |
0.8750 |
7/8-16 |
UN |
0.8750 |
0.8656 |
0.8344 |
0.8307 |
0.8006 |
0.8070 |
0.8159 |
0.8344 |
0.8392 |
0.8750 |
7/8-20 |
UNEF |
0.8750 |
0.8669 |
0.8425 |
0.8391 |
0.8155 |
0.8210 |
0.8286 |
0.8425 |
0.8469 |
0.8750 |
7/8-28 |
UN |
0.8750 |
0.8685 |
0.8518 |
0.8489 |
0.8325 |
0.8360 |
0.8426 |
0.8518 |
0.8556 |
0.8750 |
7/8-32 |
UN |
0.8750 |
0.8690 |
0.8547 |
0.8519 |
0.8378 |
0.8410 |
0.8469 |
0.8547 |
0.8583 |
0.8750 |
15/16-12 |
UN |
0.9375 |
0.9261 |
0.8834 |
0.8792 |
0.8383 |
0.8470 |
0.8575 |
0.8834 |
0.8889 |
0.9375 |
15/16-16 |
UN |
0.9375 |
0.9281 |
0.8969 |
0.8932 |
0.8631 |
0.8700 |
0.8784 |
0.8969 |
0.9017 |
0.9375 |
15/16-20 |
UNEF |
0.9375 |
0.9294 |
0.9050 |
0.9016 |
0.8780 |
0.8830 |
0.8911 |
0.9050 |
0.9094 |
0.9375 |
15/16-28 |
UN |
0.9375 |
0.9310 |
0.9143 |
0.9113 |
0.8950 |
0.8990 |
0.9051 |
0.9143 |
0.9181 |
0.9375 |
15/16-32 |
UN |
0.9375 |
0.9315 |
0.9172 |
0.9144 |
0.9003 |
0.9040 |
0.9094 |
0.9172 |
0.9209 |
0.9375 |
3级标准系列统一螺纹的极限尺寸(1~1 3/4)
3级标准系列统一螺纹的极限尺寸 |
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
公称直径 -牙数 |
系列 代号 |
|
3B 内螺纹 |
||||||||
大径 d |
中径 d2 |
UNR 小径d3 (参考) |
小径 D1 |
中径 D2 |
大径 D |
||||||
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
||
1-8 |
UNC |
1.0000 |
0.9850 |
0.9188 |
0.9137 |
0.8512 |
0.8650 |
0.8797 |
0.9188 |
0.9254 |
1.0000 |
1-12 |
UNF |
1.0000 |
0.9886 |
0.9459 |
0.9415 |
0.9008 |
0.9100 |
0.9198 |
0.9459 |
0.9516 |
1.0000 |
1-16 |
UN |
1.0000 |
0.9906 |
0.9594 |
0.9557 |
0.9256 |
0.9320 |
0.9409 |
0.9594 |
0.9643 |
1.0000 |
1-20 |
UNEF |
1.0000 |
0.9919 |
0.9675 |
0.9641 |
0.9405 |
0.9460 |
0.9536 |
0.9675 |
0.9719 |
1.0000 |
1-28 |
UN |
1.0000 |
0.9935 |
0.9768 |
0.9738 |
0.9575 |
0.9610 |
0.9676 |
0.9768 |
0.9807 |
1.0000 |
1-32 |
UN |
1.0000 |
0.9940 |
0.9797 |
0.9769 |
0.9628 |
0.9660 |
0.9719 |
0.9797 |
0.9834 |
1.0000 |
11/16-8 |
UN |
1.0625 |
1.0475 |
0.9813 |
0.9762 |
0.9137 |
0.9270 |
0.9422 |
0.9813 |
0.9880 |
1.0625 |
11/16-12 |
UN |
1.0625 |
1.0511 |
1.0084 |
1.0041 |
0.9633 |
0.9720 |
0.9823 |
1.0084 |
1.0139 |
1.0625 |
11/16-16 |
UN |
1.0625 |
1.0531 |
1.0219 |
1.0181 |
0.9881 |
0.9950 |
1.0034 |
1.0219 |
1.0268 |
1.0625 |
11/16-18 |
UNEF |
1.0625 |
1.0538 |
1.0264 |
1.0228 |
0.9963 |
1.0020 |
1.0105 |
1.0264 |
1.0311 |
1.0625 |
11/16-20 |
UN |
1.0625 |
1.0544 |
1.0300 |
1.0266 |
1.0030 |
1.0080 |
1.0161 |
1.0300 |
1.0345 |
1.0625 |
11/16-28 |
UN |
1.0625 |
1.0560 |
1.0393 |
1.0363 |
1.0200 |
1.0240 |
1.0301 |
1.0393 |
1.0432 |
1.0625 |
11/8-7 |
UNC |
1.1250 |
1.1086 |
1.0322 |
1.0268 |
0.9549 |
0.9700 |
1.0322 |
1.0322 |
1.0393 |
1.1250 |
11/8-8 |
UN |
1.1250 |
1.1100 |
1.0438 |
1.0386 |
0.9762 |
0.9900 |
1.0438 |
1.0438 |
1.0505 |
1.1250 |
11/8-12 |
UNF |
1.1250 |
1.1136 |
1.0709 |
1.0664 |
1.0258 |
1.0350 |
1.0709 |
1.0709 |
1.0768 |
1.1250 |
11/8-16 |
UN |
1.1250 |
1.1156 |
1.0844 |
1.0806 |
1.0506 |
1.0570 |
1.0844 |
1.0844 |
1.0893 |
1.1250 |
11/8-18 |
UNEF |
1.1250 |
1.1163 |
1.0889 |
1.0853 |
1.0588 |
1.0650 |
1.0889 |
1.0889 |
1.0936 |
1.1250 |
11/8-20 |
UN |
1.1250 |
1.1169 |
1.0925 |
1.0890 |
1.0655 |
1.0710 |
1.0925 |
1.0925 |
1.0970 |
1.1250 |
11/8-28 |
UN |
1.1250 |
1.1185 |
1.1018 |
1.0988 |
1.0825 |
1.0860 |
1.1018 |
1.1018 |
1.1057 |
1.1250 |
13/16-8 |
UN |
1.1875 |
1.1725 |
1.1063 |
1.1011 |
1.0387 |
1.0520 |
1.1063 |
1.1063 |
1.1131 |
1.1875 |
13/16-12 |
UN |
1.1875 |
1.1761 |
1.1334 |
1.1291 |
1.0883 |
1.0970 |
1.1334 |
1.1334 |
1.1390 |
1.1875 |
13/16-16 |
UN |
1.1875 |
1.1781 |
1.1469 |
1.1431 |
1.1131 |
1.1200 |
1.1469 |
1.1469 |
1.1518 |
1.1875 |
13/16-18 |
UNEF |
1.1875 |
1.1788 |
1.1514 |
1.1478 |
1.1213 |
1.1270 |
1.1514 |
1.1514 |
1.1561 |
1.1875 |
13/16-20 |
UN |
1.1875 |
1.1794 |
1.1550 |
1.1515 |
1.1280 |
1.1330 |
1.1550 |
1.1550 |
1.1595 |
1.1875 |
13/16-28 |
UN |
1.1875 |
1.1810 |
1.1643 |
1.1613 |
1.1450 |
1.1490 |
1.1643 |
1.1643 |
1.1683 |
1.1875 |
11/4-7 |
UNC |
1.2500 |
1.2336 |
1.1572 |
1.1517 |
1.0799 |
1.0950 |
1.1572 |
1.1572 |
1.1644 |
1.2500 |
11/4-8 |
UN |
1.2500 |
1.2350 |
1.1688 |
1.1635 |
1.1012 |
1.1150 |
1.1688 |
1.1688 |
1.1757 |
1.2500 |
11/4-12 |
UNF |
1.2500 |
1.2386 |
1.1959 |
1.1913 |
1.1508 |
1.1600 |
1.1959 |
1.1959 |
1.2019 |
1.2500 |
11/4-16 |
UN |
1.2500 |
1.2406 |
1.2094 |
1.2056 |
1.1756 |
1.1820 |
1.2094 |
1.2094 |
1.2144 |
1.2500 |
11/4-18 |
UNEF |
1.2500 |
1.2413 |
1.2139 |
1.2103 |
1.1838 |
1.1900 |
1.2139 |
1.2139 |
1.2186 |
1.2500 |
11/4-20 |
UN |
1.2500 |
1.2419 |
1.2175 |
1.2140 |
1.1905 |
1.1960 |
1.2175 |
1.2175 |
1.2220 |
1.2500 |
11/4-28 |
UN |
1.2500 |
1.2435 |
1.2268 |
1.2237 |
1.2075 |
1.2110 |
1.2268 |
1.2268 |
1.2308 |
1.2500 |
15/16-8 |
UN |
1.3125 |
1.2975 |
1.2313 |
1.2260 |
1.1637 |
1.1770 |
1.2313 |
1.2313 |
1.2382 |
1.3125 |
15/16-12 |
UN |
1.3125 |
1.3011 |
1.2584 |
1.2540 |
1.2133 |
1.2220 |
1.2584 |
1.2584 |
1.2641 |
1.3125 |
15/16-16 |
UN |
1.3125 |
1.3031 |
1.2719 |
1.2681 |
1.2381 |
1.2450 |
1.2719 |
1.2719 |
1.2769 |
1.3125 |
15/16-18 |
UNEF |
1.3125 |
1.3038 |
1.2764 |
1.2727 |
1.2463 |
1.2520 |
1.2764 |
1.2764 |
1.2812 |
1.3125 |
15/16-20 |
UN |
1.3125 |
1.3044 |
1.2800 |
1.2765 |
1.2530 |
1.2580 |
1.2800 |
1.2800 |
1.2846 |
1.3125 |
15/16-28 |
UN |
1.3125 |
1.3060 |
1.2893 |
1.2862 |
1.2700 |
1.2740 |
1.2893 |
1.2893 |
1.2933 |
1.3125 |
13/8-6 |
UNC |
1.3750 |
1.3568 |
1.2667 |
1.2607 |
1.1765 |
1.1950 |
1.2667 |
1.2667 |
1.2745 |
1.3750 |
13/8-8 |
UN |
1.3750 |
1.3600 |
1.2938 |
1.2884 |
1.2262 |
1.2400 |
1.2938 |
1.2938 |
1.3008 |
1.3750 |
13/8-12 |
UNF |
1.3750 |
1.3636 |
1.3209 |
1.3162 |
1.2758 |
1.2580 |
1.2948 |
1.3209 |
1.3270 |
1.3750 |
13/8-16 |
UN |
1.3750 |
1.3656 |
1.3344 |
1.3305 |
1.3006 |
1.3070 |
1.3159 |
1.3344 |
1.3394 |
1.3750 |
13/8-18 |
UNEF |
1.3750 |
1.3663 |
1.3389 |
1.3352 |
1.3088 |
1.3150 |
1.3230 |
1.3389 |
1.3437 |
1.3750 |
13/8-20 |
UN |
1.3750 |
1.3669 |
1.3425 |
1.3390 |
1.3155 |
1.3210 |
1.3286 |
1.3425 |
1.3471 |
1.3750 |
13/8-28 |
UN |
1.3750 |
1.3685 |
1.3518 |
1.3487 |
1.3325 |
1.3360 |
1.3426 |
1.3518 |
1.3558 |
1.3750 |
17/16-6 |
UN |
1.4375 |
1.4193 |
1.3292 |
1.3232 |
1.2390 |
1.2570 |
1.2771 |
1.3292 |
1.3370 |
1.4375 |
17/16-8 |
UN |
1.4375 |
1.4225 |
1.3563 |
1.3509 |
1.2887 |
1.3020 |
1.3172 |
1.3563 |
1.3634 |
1.4375 |
17/16-12 |
UN |
1.4375 |
1.4261 |
1.3834 |
1.3790 |
1.3383 |
1.3470 |
1.3573 |
1.3834 |
1.3891 |
1.4375 |
17/16-16 |
UN |
1.4375 |
1.4281 |
1.3969 |
1.3930 |
1.3631 |
1.3700 |
1.3784 |
1.3969 |
1.4020 |
1.4375 |
17/16-18 |
UNEF |
1.4375 |
1.4288 |
1.4014 |
1.3977 |
1.3713 |
1.3770 |
1.3855 |
1.4014 |
1.4062 |
1.4375 |
17/16-20 |
UN |
1.4375 |
1.4294 |
1.4050 |
1.4014 |
1.3780 |
1.3830 |
1.3911 |
1.4050 |
1.4096 |
1.4375 |
17/16-28 |
UN |
1.4375 |
1.4310 |
1.4143 |
1.4112 |
1.3950 |
1.3990 |
1.4051 |
1.4143 |
1.4184 |
1.4375 |
11/2-6 |
UNC |
1.5000 |
1.4818 |
1.3917 |
1.3856 |
1.3015 |
1.3200 |
1.3396 |
1.3917 |
1.3996 |
1.5000 |
11/2-8 |
UN |
1.5000 |
1.4850 |
1.4188 |
1.4133 |
1.3512 |
1.3650 |
1.3797 |
1.4188 |
1.4259 |
1.5000 |
11/2-12 |
UNF |
1.5000 |
1.4886 |
1.4459 |
1.4411 |
1.4008 |
1.4100 |
1.4198 |
1.4459 |
1.4522 |
1.5000 |
11/2-16 |
UN |
1.5000 |
1.4906 |
1.4594 |
1.4555 |
1.4256 |
1.4320 |
1.4409 |
1.4594 |
1.4645 |
1.5000 |
11/2-18 |
UNEF |
1.5000 |
1.4913 |
1.4639 |
1.4602 |
1.4338 |
1.4400 |
1.4480 |
1.4639 |
1.4687 |
1.5000 |
11/2-20 |
UN |
1.5000 |
1.4919 |
1.4675 |
1.4639 |
1.4405 |
1.4460 |
1.4536 |
1.4675 |
1.4721 |
1.5000 |
11/2-28 |
UN |
1.5000 |
1.4935 |
1.4768 |
1.4737 |
1.4575 |
1.4610 |
1.4676 |
1.4768 |
1.4809 |
1.5000 |
19/16-6 |
UN |
1.5625 |
1.5443 |
1.4542 |
1.4481 |
1.3640 |
1.3820 |
1.4021 |
1.4542 |
1.4622 |
1.5625 |
19/16-8 |
UN |
1.5625 |
1.5475 |
1.4813 |
1.4758 |
1.4137 |
1.4270 |
1.4422 |
1.4813 |
1.4885 |
1.5625 |
19/16-12 |
UN |
1.5625 |
1.5511 |
1.5084 |
1.5040 |
1.4633 |
1.4720 |
1.4823 |
1.5084 |
1.5142 |
1.5625 |
19/16-16 |
UN |
1.5625 |
1.5531 |
1.5219 |
1.5180 |
1.4881 |
1.4950 |
1.5034 |
1.5219 |
1.5270 |
1.5625 |
19/16-18 |
UNEF |
1.5625 |
1.5538 |
1.5264 |
1.5227 |
1.4963 |
1.5020 |
1.5105 |
1.5264 |
1.5313 |
1.5625 |
19/16-20 |
UN |
1.5625 |
1.5544 |
1.5300 |
1.5264 |
1.5030 |
1.5080 |
1.5161 |
1.5300 |
1.5347 |
1.5625 |
15/8-6 |
UN |
1.6250 |
1.6068 |
1.5167 |
1.5105 |
1.4265 |
1.4450 |
1.4646 |
1.5167 |
1.5247 |
1.6250 |
15/8-8 |
UN |
1.6250 |
1.6100 |
1.5438 |
1.5382 |
1.4762 |
1.4900 |
1.5047 |
1.5438 |
1.5510 |
1.6250 |
15/8-12 |
UN |
1.6250 |
1.6136 |
1.5709 |
1.5665 |
1.5258 |
1.5350 |
1.5448 |
1.5709 |
1.5767 |
1.6250 |
15/8-16 |
UN |
1.6250 |
1.6156 |
1.5844 |
1.5805 |
1.5506 |
1.5570 |
1.5659 |
1.5844 |
1.5895 |
1.6250 |
15/8-18 |
UNEF |
1.6250 |
1.6163 |
1.5889 |
1.5851 |
1.5588 |
1.5650 |
1.5730 |
1.5889 |
1.5938 |
1.6250 |
15/8-20 |
UN |
1.6250 |
1.6169 |
1.5925 |
1.5889 |
1.5655 |
1.5710 |
1.5786 |
1.5925 |
1.5972 |
1.6250 |
111/16-6 |
UN |
1.6875 |
1.6693 |
1.5792 |
1.5730 |
1.4890 |
1.5070 |
1.5271 |
1.5792 |
1.5873 |
1.6875 |
111/16-8 |
UN |
1.6875 |
1.6725 |
1.6063 |
1.6007 |
1.5387 |
1.5520 |
1.5672 |
1.6063 |
1.6136 |
1.6875 |
111/16-12 |
UN |
1.6875 |
1.6761 |
1.6334 |
1.6289 |
1.5883 |
1.5970 |
1.6073 |
1.6334 |
1.6392 |
1.6875 |
111/16-16 |
UN |
1.6875 |
1.6781 |
1.6469 |
1.6429 |
1.6131 |
1.6200 |
1.6284 |
1.6469 |
1.6520 |
1.6875 |
111/16-18 |
UNEF |
1.6875 |
1.6788 |
1.6514 |
1.6476 |
1.6213 |
1.6270 |
1.6355 |
1.6514 |
1.6563 |
1.6875 |
111/16-20 |
UN |
1.6875 |
1.6794 |
1.6550 |
1.6514 |
1.6280 |
1.6330 |
1.6411 |
1.6550 |
1.6597 |
1.6875 |
13/4-5 |
UNC |
1.7500 |
1.7295 |
1.6201 |
1.6134 |
1.5118 |
1.5330 |
1.5575 |
1.6201 |
1.6288 |
1.7500 |
13/4-6 |
UN |
1.7500 |
1.7318 |
1.6417 |
1.6354 |
1.5515 |
1.5700 |
1.5896 |
1.6417 |
1.6498 |
1.7500 |
13/4-8 |
UN |
1.7500 |
1.7350 |
1.6688 |
1.6631 |
1.6012 |
1.6150 |
1.6297 |
1.6688 |
1.6762 |
1.7500 |
13/4-12 |
UN |
1.7500 |
1.7386 |
1.6959 |
1.6914 |
1.6508 |
1.6600 |
1.6698 |
1.6959 |
1.7017 |
1.7500 |
13/4-16 |
UN |
1.7500 |
1.7406 |
1.7094 |
1.7054 |
1.6756 |
1.6820 |
1.6909 |
1.7094 |
1.7146 |
1.7500 |
13/4-20 |
UN |
1.7500 |
1.7419 |
1.7175 |
1.7139 |
1.6905 |
1.6960 |
1.7036 |
1.7175 |
1.7222 |
1.7500 |
3级标准系列统一螺纹的极限尺寸(1 13/16~3 1/2)
3级标准系列统一螺纹的极限尺寸 |
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
公称直径 -牙数 |
系列 代号 |
|
3B 内螺纹 |
||||||||
大径 d |
中径 d2 |
UNR 小径d3 (参考) |
小径 D1 |
中径 D2 |
大径 D |
||||||
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
||
113/16-6 |
UN |
1.8125 |
1.7943 |
1.7042 |
1.6979 |
1.6140 |
1.6320 |
1.6521 |
1.7042 |
1.7124 |
1.8125 |
113/16-8 |
UN |
1.8125 |
1.7975 |
1.7313 |
1.7256 |
1.6637 |
1.6770 |
1.6922 |
1.7313 |
1.7387 |
1.8125 |
113/16-12 |
UN |
1.8125 |
1.8011 |
1.7584 |
1.7539 |
1.7133 |
1.7220 |
1.7323 |
1.7584 |
1.7642 |
1.8125 |
113/16-16 |
UN |
1.8125 |
1.8031 |
1.7719 |
1.7679 |
1.7381 |
1.7450 |
1.7534 |
1.7719 |
1.7771 |
1.8125 |
113/16-20 |
UN |
1.8125 |
1.8044 |
1.7800 |
1.7763 |
1.7530 |
1.7580 |
1.7661 |
1.7800 |
1.7847 |
1.8125 |
17/8-6 |
UN |
1.8750 |
1.8568 |
1.7667 |
1.7604 |
1.6765 |
1.6950 |
1.7146 |
1.7667 |
1.7749 |
1.8750 |
17/8-8 |
UN |
1.8750 |
1.8600 |
1.7938 |
1.7881 |
1.7262 |
1.7400 |
1.7547 |
1.7938 |
1.8013 |
1.8750 |
17/8-12 |
UN |
1.8750 |
1.8636 |
1.8209 |
1.8164 |
1.7758 |
1.7850 |
1.7948 |
1.8209 |
1.8268 |
1.8750 |
17/8-16 |
UN |
1.8750 |
1.8656 |
1.8344 |
1.8304 |
1.8006 |
1.8070 |
1.8159 |
1.8344 |
1.8396 |
1.8750 |
17/8-20 |
UN |
1.8750 |
1.8669 |
1.8425 |
1.8388 |
1.8155 |
1.8210 |
1.8286 |
1.8425 |
1.8473 |
1.8750 |
115/16-6 |
UN |
1.9375 |
1.9193 |
1.8292 |
1.8228 |
1.7390 |
1.7570 |
1.7771 |
1.8292 |
1.8375 |
1.9375 |
115/16-8 |
UN |
1.9375 |
1.9225 |
1.8563 |
1.8505 |
1.7887 |
1.8020 |
1.8172 |
1.8563 |
1.8638 |
1.9375 |
115/16-12 |
UN |
1.9375 |
1.9261 |
1.8834 |
1.8789 |
1.8383 |
1.8470 |
1.8573 |
1.8834 |
1.8893 |
1.9375 |
115/16-16 |
UN |
1.9375 |
1.9281 |
1.8969 |
1.8929 |
1.8631 |
1.8700 |
1.8784 |
1.8969 |
1.9021 |
1.9375 |
115/16-20 |
UN |
1.9375 |
1.9294 |
1.9050 |
1.9013 |
1.8780 |
1.8830 |
1.8911 |
1.9050 |
1.9098 |
1.9375 |
2-41/2 |
UNC |
2.0000 |
1.9780 |
1.8557 |
1.8486 |
1.7354 |
1.7590 |
1.7861 |
1.8557 |
1.8650 |
2.0000 |
2-6 |
UN |
2.0000 |
1.9818 |
1.8917 |
1.8853 |
1.8015 |
1.8200 |
1.8396 |
1.8917 |
1.9000 |
2.0000 |
2-8 |
UN |
2.0000 |
1.9850 |
1.9188 |
1.9130 |
1.8512 |
1.8650 |
1.8797 |
1.9188 |
1.9264 |
2.0000 |
2-12 |
UN |
2.0000 |
1.9886 |
1.9459 |
1.9414 |
1.9008 |
1.9100 |
1.9198 |
1.9459 |
1.9518 |
2.0000 |
2-16 |
UN |
2.0000 |
1.9906 |
1.9594 |
1.9554 |
1.9256 |
1.9320 |
1.9409 |
1.9594 |
1.9646 |
2.0000 |
2-20 |
UN |
2.0000 |
1.9919 |
1.9675 |
1.9638 |
1.9405 |
1.9460 |
1.9536 |
1.9675 |
1.9723 |
2.0000 |
21/8-6 |
UN |
2.1250 |
2.1068 |
2.0167 |
2.0102 |
1.9265 |
1.9450 |
1.9646 |
2.0167 |
2.0251 |
2.1250 |
21/8-8 |
UN |
2.1250 |
2.1100 |
2.0438 |
2.0379 |
1.9762 |
1.9900 |
2.0047 |
2.0438 |
2.0515 |
2.1250 |
21/8-12 |
UN |
2.1250 |
2.1136 |
2.0709 |
2.0663 |
2.0258 |
2.0350 |
2.0448 |
2.0709 |
2.0768 |
2.1250 |
21/8-16 |
UN |
2.1250 |
2.1156 |
2.0844 |
2.0803 |
2.0506 |
2.0570 |
2.0659 |
2.0844 |
2.0897 |
2.1250 |
21/8-20 |
UN |
2.1250 |
2.1169 |
2.0925 |
2.0888 |
2.0655 |
2.0710 |
2.0786 |
2.0925 |
2.0973 |
2.1250 |
21/4-41/2 |
UNC |
2.2500 |
2.2280 |
2.1057 |
2.0984 |
1.9854 |
2.0090 |
2.0361 |
2.1057 |
2.1152 |
2.2500 |
21/4-6 |
UN |
2.2500 |
2.2318 |
2.1417 |
2.1351 |
2.0515 |
2.0700 |
2.0896 |
2.1417 |
2.1502 |
2.2500 |
21/4-8 |
UN |
2.2500 |
2.2350 |
2.1688 |
2.1628 |
2.1012 |
2.1150 |
2.1297 |
2.1688 |
2.1766 |
2.2500 |
21/4-12 |
UN |
2.2500 |
2.2386 |
2.1959 |
2.1913 |
2.1508 |
2.1600 |
2.1698 |
2.1959 |
2.2019 |
2.2500 |
21/4-16 |
UN |
2.2500 |
2.2406 |
2.2094 |
2.2053 |
2.1756 |
2.1820 |
2.1909 |
2.2094 |
2.2147 |
2.2500 |
21/4-20 |
UN |
2.2500 |
2.249 |
2.2175 |
2.2137 |
2.1905 |
2.1960 |
2.2036 |
2.2175 |
2.2224 |
2.2500 |
23/8-6 |
UN |
2.3750 |
2.3568 |
2.2667 |
2.2601 |
2.1765 |
2.1950 |
2.2146 |
2.2667 |
2.2753 |
2.3750 |
23/8-8 |
UN |
2.3750 |
2.3600 |
2.2938 |
2.2878 |
2.2262 |
2.2400 |
2.2547 |
2.2938 |
2.3017 |
2.3750 |
23/8-12 |
UN |
2.3750 |
2.3636 |
2.3209 |
2.3163 |
2.2758 |
2.2850 |
2.2948 |
2.3209 |
2.3269 |
2.3750 |
23/8-16 |
UN |
2.3750 |
2.3656 |
2.3344 |
2.3303 |
2.3006 |
2.3070 |
2.3159 |
2.3344 |
2.3398 |
2.3750 |
23/8-20 |
UN |
2.3750 |
2.3669 |
2.3425 |
2.3387 |
2.315 |
2.3210 |
2.3286 |
2.3425 |
2.3474 |
2.3750 |
21/2-4 |
UNC |
2.5000 |
2.4762 |
2.3376 |
2.3298 |
2.2023 |
2.2290 |
2.2594 |
2.3376 |
2.3477 |
2.5000 |
21/2-6 |
UN |
2.5000 |
2.4818 |
2.3917 |
2.3850 |
2.3015 |
2.3200 |
2.3396 |
2.3917 |
2.4004 |
2.5000 |
21/2-8 |
UN |
2.5000 |
2.4850 |
2.4188 |
2.4127 |
2.3512 |
2.3650 |
2.3797 |
2.4188 |
2.4268 |
2.5000 |
21/2-12 |
UN |
2.5000 |
2.4886 |
2.4459 |
2.4413 |
2.4008 |
2.4100 |
2.4198 |
2.4459 |
2.4519 |
2.5000 |
21/2-16 |
UN |
2.5000 |
2.4906 |
2.4594 |
2.4553 |
2.4256 |
2.4320 |
2.4409 |
2.4594 |
2.4648 |
2.5000 |
21/2-20 |
UN |
2.5000 |
2.4919 |
2.4675 |
2.4637 |
2.4405 |
2.4460 |
2.4536 |
2.4675 |
2.4725 |
2.5000 |
25/8-6 |
UN |
2.6250 |
2.6068 |
2.5167 |
2.5099 |
2.4265 |
2.4450 |
2.4646 |
2.5167 |
2.5255 |
2.6250 |
25/8-8 |
UN |
2.6250 |
2.6100 |
2.5438 |
2.5376 |
2.4762 |
2.4900 |
2.5047 |
2.5438 |
2.5518 |
2.6250 |
25/8-12 |
UN |
2.6250 |
2.6136 |
2.5709 |
2.5662 |
2.5258 |
2.5350 |
2.5448 |
2.5709 |
2.5770 |
2.6250 |
25/8-16 |
UN |
2.6250 |
2.6156 |
2.5844 |
2.5802 |
2.5506 |
2.5570 |
2.5659 |
2.5844 |
2.5898 |
2.6250 |
25/8-20 |
UN |
2.6250 |
2.6169 |
2.5925 |
2.5887 |
2.5655 |
2.5710 |
2.5786 |
2.5925 |
2.5975 |
2.6250 |
23/4-4 |
UNC |
2.7500 |
2.7262 |
2.5876 |
2.5797 |
2.4523 |
2.4790 |
2.5094 |
2.5876 |
2.5979 |
2.7500 |
23/4-6 |
UN |
2.7500 |
2.7318 |
2.6417 |
2.6349 |
2.5515 |
2.5700 |
2.5896 |
2.6417 |
2.6506 |
2.7500 |
23/4-8 |
UN |
2.7500 |
2.7350 |
2.6688 |
2.6625 |
2.6012 |
2.6150 |
2.6297 |
2.6688 |
2.6769 |
2.7500 |
23/4-12 |
UN |
2.7500 |
2.7386 |
2.6959 |
2.6912 |
2.6508 |
2.6600 |
2.6698 |
2.6959 |
2.7020 |
2.7500 |
23/4-16 |
UN |
2.7500 |
2.7406 |
2.7094 |
2.7052 |
2.6756 |
2.6820 |
2.6909 |
2.7094 |
2.7148 |
2.7500 |
23/4-20 |
UN |
2.7500 |
2.7419 |
2.7175 |
2.7136 |
2.6905 |
2.6960 |
2.7036 |
2.7175 |
2.7225 |
2.7500 |
27/8-6 |
UN |
2.8750 |
2.8568 |
2.7667 |
2.7598 |
2.6765 |
2.6950 |
2.7146 |
2.7667 |
2.7757 |
2.8750 |
27/8-8 |
UN |
2.8750 |
2.8600 |
2.7938 |
2.7875 |
2.7262 |
2.7400 |
2.7547 |
2.7938 |
2.8020 |
2.8750 |
27/8-12 |
UN |
2.8750 |
2.8636 |
2.8209 |
2.8162 |
2.7758 |
2.7850 |
2.7948 |
2.8209 |
2.8270 |
2.8750 |
27/8-16 |
UN |
2.8750 |
2.8656 |
2.8344 |
2.8302 |
2.8006 |
2.8070 |
2.8159 |
2.8344 |
2.8399 |
2.8750 |
27/8-20 |
UN |
2.8750 |
2.8669 |
2.8425 |
2.8386 |
2.8155 |
2.8210 |
2.8286 |
2.8425 |
2.8475 |
2.8750 |
3-4 |
UNC |
3.0000 |
2.9762 |
2.8376 |
2.9286 |
2.7023 |
2.7290 |
2.7594 |
2.8376 |
2.8480 |
3.0000 |
3-6 |
UN |
3.0000 |
2.9818 |
2.8917 |
2.8447 |
2.8015 |
2.8200 |
2.8396 |
2.8917 |
2.9008 |
3.0000 |
3-8 |
UN |
3.0000 |
2.9850 |
2.9188 |
2.9124 |
2.8512 |
2.8650 |
2.8797 |
2.9188 |
2.9271 |
3.0000 |
3-12 |
UN |
3.0000 |
2.9886 |
2.9459 |
2.9412 |
2.9008 |
2.9100 |
2.9198 |
2.9459 |
2.9521 |
3.0000 |
3-16 |
UN |
3.0000 |
2.9906 |
2.9594 |
2.9552 |
2.9256 |
2.9320 |
2.9409 |
2.9594 |
2.9649 |
3.0000 |
3-20 |
UN |
3.0000 |
2.9919 |
2.9675 |
2.9636 |
2.9405 |
2.9460 |
2.9536 |
2.9675 |
2.9726 |
3.0000 |
31/8-6 |
UN |
3.1250 |
3.1068 |
3.0167 |
3.0097 |
2.9265 |
2.9450 |
2.9646 |
3.0167 |
3.0259 |
3.1250 |
31/8-8 |
UN |
3.1250 |
3.1100 |
3.0438 |
3.0374 |
2.9762 |
2.9900 |
3.0047 |
3.0438 |
3.0522 |
3.1250 |
31/8-12 |
UN |
3.1250 |
3.1136 |
3.0709 |
3.0661 |
3.0258 |
3.0350 |
3.0448 |
3.0709 |
3.0771 |
3.1250 |
31/8-16 |
UN |
3.1250 |
3.1156 |
3.0844 |
3.0801 |
3.0506 |
3.0570 |
3.0659 |
3.0844 |
3.0899 |
3.1250 |
31/4-4 |
UNC |
3.2500 |
3.2262 |
3.0876 |
3.0794 |
2.9523 |
2.9790 |
3.0094 |
3.0876 |
3.0982 |
3.2500 |
31/4-6 |
UN |
3.2500 |
3.2318 |
3.1417 |
3.1346 |
3.0515 |
3.0700 |
3.0896 |
3.1417 |
3.1509 |
3.2500 |
31/4-8 |
UN |
3.2500 |
3.2350 |
3.1688 |
3.1623 |
3.1012 |
3.1150 |
3.1297 |
3.1688 |
3.1773 |
3.2500 |
31/4-12 |
UN |
3.2500 |
3.2386 |
3.1959 |
3.1911 |
3.1508 |
3.1600 |
3.1698 |
3.1959 |
3.2021 |
3.2500 |
31/4-16 |
UN |
3.2500 |
3.2406 |
3.2094 |
3.2051 |
3.1756 |
3.1820 |
3.1909 |
3.2094 |
3.2150 |
3.2500 |
33/8-6 |
UN |
3.3750 |
3.3568 |
3.2667 |
3.2595 |
3.1765 |
3.1950 |
3.2146 |
3.2667 |
3.2760 |
3.3750 |
33/8-8 |
UN |
3.3750 |
3.3600 |
3.2938 |
3.2872 |
3.2262 |
3.2400 |
3.2547 |
3.2938 |
3.3023 |
3.3750 |
33/8-12 |
UN |
3.3750 |
3.3636 |
3.3209 |
3.3161 |
3.2758 |
3.2850 |
3.2948 |
3.3209 |
3.3272 |
3.3750 |
33/8-16 |
UN |
3.3750 |
3.3656 |
3.3344 |
3.3301 |
3.3006 |
3.3070 |
3.3159 |
3.3344 |
3.3400 |
3.3750 |
31/2-4 |
UNC |
3.5000 |
3.4762 |
3.3376 |
3.3293 |
3.2023 |
3.2290 |
3.2594 |
3.3376 |
3.3484 |
3.5000 |
31/2-6 |
UN |
3.5000 |
3.4818 |
3.3917 |
3.3845 |
3.3015 |
3.3200 |
3.396 |
3.3917 |
3.4011 |
3.5000 |
31/2-8 |
UN |
3.5000 |
3.4850 |
3.4188 |
3.4122 |
3.3512 |
3.3650 |
3.3797 |
3.4188 |
3.4274 |
3.5000 |
31/2-12 |
UN |
3.5000 |
3.4886 |
3.4459 |
3.4411 |
3.4008 |
3.4100 |
3.4198 |
3.4459 |
3.4522 |
3.5000 |
31/2-16 |
UN |
3.5000 |
3.4906 |
3.4594 |
3.4551 |
3.4256 |
3.4320 |
3.4409 |
3.4594 |
3.4650 |
3.5000 |
3级标准系列统一螺纹的极限尺寸(3 5/8~6)
3级标准系列统一螺纹的极限尺寸 |
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
公称直径 -牙数 |
系列 代号 |
|
3B 内螺纹 |
||||||||
大径 d |
中径 d2 |
UNR 小径d3 (参考) |
小径 D1 |
中径 D2 |
大径 D |
||||||
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
||
35/8-6 |
UN |
3.6250 |
3.6068 |
3.5167 |
3.5094 |
3.4265 |
3.4450 |
3.4646 |
3.5167 |
3.5262 |
3.6250 |
35/8-8 |
UN |
3.6250 |
3.6100 |
3.5438 |
3.5371 |
3.4762 |
3.4900 |
3.5047 |
3.5438 |
3.5525 |
3.6250 |
35/8-12 |
UN |
3.6250 |
3.6136 |
3.5709 |
3.5661 |
3.5258 |
3.5350 |
3.5448 |
3.5709 |
3.5772 |
3.6250 |
35/8-16 |
UN |
3.6250 |
3.6156 |
3.5844 |
3.5801 |
3.5506 |
3.5570 |
3.5659 |
3.5844 |
3.5900 |
3.6250 |
33/4-4 |
UNC |
3.7500 |
3.7262 |
3.5876 |
3.5792 |
3.4523 |
3.4790 |
3.5094 |
3.5876 |
3.5985 |
3.7500 |
33/4-6 |
UN |
3.7500 |
3.7318 |
3.6417 |
3.6344 |
3.5515 |
3.5700 |
3.5896 |
3.6417 |
3.6512 |
3.7500 |
33/4-8 |
UN |
3.7500 |
3.7350 |
3.6688 |
3.6621 |
3.6012 |
3.6150 |
3.6297 |
3.6688 |
3.6776 |
3.7500 |
33/4-12 |
UN |
3.7500 |
3.7386 |
3.6959 |
3.6910 |
3.6508 |
3.6600 |
3.8698 |
3.6959 |
3.7022 |
3.7500 |
33/4-16 |
UN |
3.7500 |
3.7406 |
3.7094 |
3.7050 |
3.6756 |
3.6820 |
3.6909 |
3.7094 |
3.7151 |
3.7500 |
37/8-6 |
UN |
3.8750 |
3.8568 |
3.7667 |
3.7593 |
3.6765 |
3.6950 |
3.7146 |
3.7667 |
3.7763 |
3.8750 |
37/8-8 |
UN |
3.8750 |
3.8600 |
3.7938 |
3.7870 |
3.7262 |
3.7400 |
3.7547 |
3.7938 |
3.8026 |
3.8750 |
37/8-12 |
UN |
3.8750 |
3.8636 |
3.8209 |
3.8160 |
3.7758 |
3.7850 |
3.7948 |
3.8209 |
3.8273 |
3.8750 |
37/8-16 |
UN |
3.8750 |
3.8656 |
3.8344 |
3.8300 |
3.8006 |
3.8070 |
3.8159 |
3.8344 |
3.8401 |
3.8750 |
4-4 |
UNC |
4.0000 |
3.9762 |
3.8376 |
3.8291 |
3.7023 |
3.7290 |
3.7594 |
3.8376 |
3.8487 |
4.0000 |
4-6 |
UN |
4.0000 |
3.9818 |
3.8917 |
3.8843 |
3.8015 |
3.8200 |
3.8396 |
3.8917 |
3.9014 |
4.0000 |
4-8 |
UN |
4.0000 |
3.9850 |
3.9188 |
3.9120 |
3.8512 |
3.8650 |
3.8797 |
3.9188 |
3.9277 |
4.0000 |
4-12 |
UN |
4.0000 |
3.9886 |
3.9459 |
3.9410 |
3.9008 |
3.9100 |
3.9198 |
3.9459 |
3.9523 |
4.0000 |
4-16 |
UN |
4.0000 |
3.9906 |
3.9594 |
3.9550 |
3.9256 |
3.9320 |
3.9409 |
3.9594 |
3.9651 |
4.0000 |
41/8-6 |
UN |
4.1250 |
4.1068 |
4.0167 |
4.0092 |
3.9265 |
3.9450 |
3.9646 |
4.0167 |
4.0264 |
4.1250 |
41/8-8 |
UN |
4.1250 |
4.1100 |
4.0438 |
4.0369 |
3.9762 |
3.9900 |
4.0047 |
4.0438 |
4.0528 |
4.1250 |
41/8-12 |
UN |
4.1250 |
4.1136 |
4.0709 |
4.0060 |
4.0258 |
4.0350 |
4.0448 |
4.0709 |
4.0773 |
4.1250 |
41/8-16 |
UN |
4.1250 |
4.1156 |
4.0844 |
4.0800 |
4.0506 |
4.0570 |
4.0659 |
4.0844 |
4.0901 |
4.1250 |
41/4-4 |
UN |
4.2500 |
4.2262 |
4.0876 |
4.0790 |
3.9523 |
3.9790 |
4.0094 |
4.0876 |
4.0988 |
4.2500 |
41/4-6 |
UN |
4.2500 |
4.2318 |
4.1417 |
4.1342 |
4.0515 |
4.0700 |
4.0896 |
4.1417 |
4.1515 |
4.2500 |
41/4-8 |
UN |
4.2500 |
4.2350 |
4.1688 |
4.1618 |
4.1012 |
4.1150 |
4.1297 |
4.1688 |
4.1778 |
4.2500 |
41/4-12 |
UN |
4.2500 |
4.2386 |
4.1959 |
4.1910 |
4.1508 |
4.1600 |
4.1698 |
4.1959 |
4.2023 |
4.2500 |
41/4-16 |
UN |
4.2500 |
4.2406 |
4.2094 |
4.2050 |
4.1756 |
4.1820 |
4.1909 |
4.2094 |
4.2152 |
4.2500 |
43/8-6 |
UN |
4.3750 |
4.3568 |
4.2667 |
4.2591 |
4.1765 |
4.1950 |
4.2146 |
4.2667 |
4.2766 |
4.3750 |
43/8-8 |
UN |
4.3750 |
4.3600 |
4.2938 |
4.2868 |
4.2262 |
4.2400 |
4.2547 |
4.2938 |
4.3029 |
4.3750 |
43/8-12 |
UN |
4.3750 |
4.3636 |
4.3209 |
4.3159 |
4.2758 |
4.2850 |
4.2948 |
4.3209 |
4.3273 |
4.3750 |
43/8-16 |
UN |
4.3750 |
4.356 |
4.3344 |
4.3299 |
4.3006 |
4.3070 |
4.3159 |
4.3344 |
4.3402 |
4.3750 |
41/2-4 |
UN |
4.5000 |
4.4762 |
4.3376 |
4.3289 |
4.2023 |
4.2290 |
4.2594 |
4.3376 |
4.3489 |
4.5000 |
41/2-6 |
UN |
4.5000 |
4.4818 |
4.3917 |
4.3840 |
4.3015 |
4.3200 |
4.396 |
4.3917 |
4.4016 |
4.5000 |
41/2-8 |
UN |
4.5000 |
4.4850 |
4.4188 |
4.4117 |
4.3512 |
4.3650 |
4.3797 |
4.4188 |
4.4280 |
4.5000 |
41/2-12 |
UN |
4.5000 |
4.4886 |
4.4459 |
4.4409 |
4.4008 |
4.4100 |
4.4198 |
4.4459 |
4.4524 |
4.5000 |
41/2-16 |
UN |
4.5000 |
4.4906 |
4.4594 |
4.4549 |
4.4256 |
4.4320 |
4.4409 |
4.4594 |
4.4652 |
4.5000 |
45/8-6 |
UN |
4.6250 |
4.6068 |
4.5167 |
4.5090 |
4.4265 |
4.4450 |
4.4646 |
4.5167 |
4.5267 |
4.6250 |
45/8-8 |
UN |
4.6250 |
4.6100 |
4.5438 |
4.5367 |
4.4762 |
4.4900 |
4.5047 |
4.5438 |
4.5530 |
4.6250 |
45/8-12 |
UN |
4.6250 |
4.6136 |
4.5709 |
4.5659 |
4.5258 |
4.5350 |
4.5448 |
4.5709 |
4.5774 |
4.6250 |
45/8-16 |
UN |
4.6250 |
4.6156 |
4.5844 |
4.5799 |
4.5506 |
4.5570 |
4.5659 |
4.5844 |
4.5902 |
4.6250 |
43/4-4 |
UN |
4.7500 |
4.7262 |
4.5876 |
4.5788 |
4.4523 |
4.4790 |
4.5094 |
4.5876 |
4.5990 |
4.7500 |
43/4-6 |
UN |
4.7500 |
4.7318 |
4.6417 |
4.6340 |
4.5515 |
4.5700 |
4.5896 |
4.6417 |
4.6518 |
4.7500 |
43/4-8 |
UN |
4.7500 |
4.7350 |
4.6688 |
4.6616 |
4.6012 |
4.6150 |
4.6297 |
4.6688 |
4.6781 |
4.7500 |
43/4-12 |
UN |
4.7500 |
4.7386 |
4.6959 |
4.6909 |
4.6508 |
4.6600 |
4.6698 |
4.6959 |
4.7024 |
4.7500 |
43/4-16 |
UN |
4.7500 |
4.7406 |
4.7094 |
4.7049 |
4.6756 |
4.6820 |
4.6909 |
4.7094 |
4.7153 |
4.7500 |
47/8-6 |
UN |
4.8750 |
4.8568 |
4.7667 |
4.7589 |
4.6765 |
4.6950 |
4.7146 |
4.7667 |
4.7768 |
4.8750 |
47/8-8 |
UN |
4.8750 |
4.8600 |
4.7938 |
4.7866 |
4.7262 |
4.7400 |
4.7547 |
4.7938 |
4.8032 |
4.8750 |
47/8-12 |
UN |
4.8750 |
4.8636 |
4.8209 |
4.8159 |
4.7758 |
4.7850 |
4.7948 |
4.8209 |
4.8274 |
4.8750 |
47/8-16 |
UN |
4.8750 |
4.8656 |
4.8344 |
4.8299 |
4.8006 |
4.8070 |
4.8159 |
4.8344 |
4.8403 |
4.8750 |
5-4 |
UN |
5.0000 |
4.9762 |
4.8376 |
4.8287 |
4.7023 |
4.7290 |
4.7594 |
4.8376 |
4.8492 |
5.0000 |
5-6 |
UN |
5.0000 |
4.9818 |
4.8917 |
4.8839 |
4.8015 |
4.8200 |
4.8396 |
4.8917 |
4.9019 |
5.0000 |
5-8 |
UN |
5.0000 |
4.9850 |
4.9188 |
4.9115 |
4.8512 |
4.8650 |
4.8797 |
4.9188 |
4.9282 |
5.0000 |
5-12 |
UN |
5.0000 |
4.9886 |
4.9459 |
4.9409 |
4.9008 |
4.9100 |
4.9198 |
4.9459 |
4.9525 |
5.0000 |
5-16 |
UN |
5.0000 |
4.9906 |
4.9594 |
4.9549 |
4.9256 |
4.9320 |
4.9409 |
4.9594 |
4.9653 |
5.0000 |
51/8-6 |
UN |
5.1250 |
5.1068 |
5.0167 |
5.0088 |
4.9265 |
4.9450 |
4.9646 |
5.0167 |
5.0270 |
5.1250 |
51/8-8 |
UN |
5.1250 |
5.1100 |
5.0438 |
5.0365 |
4.9762 |
4.9900 |
5.0047 |
5.0438 |
5.0533 |
5.1250 |
51/8-12 |
UN |
5.1250 |
5.1136 |
5.0709 |
5.0658 |
5.0258 |
5.0350 |
5.0448 |
5.0709 |
5.0775 |
5.1250 |
51/8-16 |
UN |
5.1250 |
5.1156 |
5.0844 |
5.0798 |
5.0506 |
5.0570 |
5.0659 |
5.0844 |
5.0903 |
5.1250 |
51/4-4 |
UN |
5.2500 |
5.2262 |
5.0876 |
5.0786 |
4.9523 |
4.9790 |
5.0094 |
5.0876 |
5.0993 |
5.2500 |
51/4-6 |
UN |
5.2500 |
5.2318 |
5.1417 |
5.1338 |
5.0515 |
5.0700 |
5.0896 |
5.1417 |
5.1520 |
5.2500 |
51/4-8 |
UN |
5.2500 |
5.2350 |
5.1688 |
5.1615 |
5.1012 |
5.1150 |
5.1297 |
5.1688 |
5.1783 |
5.2500 |
51/4-12 |
UN |
5.2500 |
5.2386 |
5.1959 |
5.1908 |
5.1508 |
5.1600 |
5.1698 |
5.1959 |
5.2025 |
5.2500 |
51/4-16 |
UN |
5.2500 |
5.2406 |
5.2094 |
5.2048 |
5.1756 |
5.1820 |
5.1909 |
5.2094 |
5.2153 |
5.2500 |
53/8-6 |
UN |
5.3750 |
5.3568 |
5.2668 |
5.2587 |
5.1765 |
5.1950 |
5.2146 |
5.2668 |
5.2771 |
5.3750 |
53/8-8 |
UN |
5.3750 |
5.3600 |
5.2938 |
5.2864 |
5.2262 |
5.2400 |
5.2547 |
5.2938 |
5.3034 |
5.3750 |
53/8-12 |
UN |
5.3750 |
5.3636 |
5.3209 |
5.3158 |
5.2758 |
5.2850 |
5.2948 |
5.3209 |
5.3275 |
5.3750 |
53/8-16 |
UN |
5.3750 |
5.3656 |
5.3344 |
5.3298 |
5.3006 |
5.3070 |
5.3159 |
5.3344 |
5.3404 |
5.3750 |
51/2-4 |
UN |
5.5000 |
5.4762 |
5.3376 |
5.3285 |
5.2023 |
5.2290 |
5.2594 |
5.3376 |
5.3494 |
5.5000 |
51/2-6 |
UN |
5.5000 |
5.4818 |
5.3917 |
5.3837 |
5.3015 |
5.3200 |
5.3396 |
5.3917 |
5.4021 |
5.5000 |
51/2-8 |
UN |
5.5000 |
5.4850 |
5.4188 |
5.4114 |
5.3512 |
5.3650 |
5.3797 |
5.4188 |
5.4285 |
5.5000 |
51/2-12 |
UN |
5.5000 |
5.4886 |
5.4459 |
5.4408 |
5.4008 |
5.4100 |
5.4198 |
5.4459 |
5.4525 |
5.5000 |
51/2-16 |
UN |
5.5000 |
5.4906 |
5.4594 |
5.4548 |
5.4256 |
5.4320 |
5.4409 |
5.4594 |
5.4654 |
5.5000 |
55/8-6 |
UN |
5.6250 |
5.6068 |
5.5167 |
5.5086 |
5.4265 |
5.4450 |
5.4646 |
5.5167 |
5.5272 |
5.6250 |
55/8-8 |
UN |
5.6250 |
5.6100 |
5.5438 |
5.5363 |
5.4762 |
5.4900 |
5.5047 |
5.5438 |
5.5535 |
5.6250 |
55/8-12 |
UN |
5.6250 |
5.6136 |
5.5709 |
5.5658 |
5.5258 |
5.5350 |
5.5448 |
5.5709 |
5.5776 |
5.6250 |
55/8-16 |
UN |
5.6250 |
5.6156 |
5.5844 |
5.5798 |
5.5506 |
5.5570 |
5.5659 |
5.5844 |
5.5904 |
5.6250 |
53/4-4 |
UN |
5.7500 |
5.7262 |
5.5876 |
5.5784 |
5.4523 |
5.4790 |
5.5094 |
5.5876 |
5.5995 |
5.7500 |
53/4-6 |
UN |
5.7500 |
5.7318 |
5.6417 |
5.6336 |
5.5515 |
5.5700 |
5.5896 |
5.6417 |
5.6523 |
5.7500 |
53/4-8 |
UN |
5.7500 |
5.7350 |
5.6688 |
5.6613 |
5.6012 |
5.6150 |
5.6297 |
5.6688 |
5.6786 |
5.7500 |
53/4-12 |
UN |
5.7500 |
5.7386 |
5.6959 |
5.6908 |
5.6508 |
5.6600 |
5.6698 |
5.6959 |
5.7026 |
5.7500 |
53/4-16 |
UN |
5.7500 |
5.7406 |
5.7094 |
5.7048 |
5.6756 |
5.6820 |
5.6909 |
5.7094 |
5.7154 |
5.7500 |
57/8-6 |
UN |
5.8750 |
5.8568 |
5.7667 |
5.7585 |
5.6765 |
5.6950 |
5.7146 |
5.7667 |
5.7773 |
5.8750 |
57/8-8 |
UN |
5.8750 |
5.8600 |
5.7938 |
5.7862 |
5.7262 |
5.7400 |
5.7547 |
5.7938 |
5.8036 |
5.8750 |
57/8-12 |
UN |
5.8750 |
5.8636 |
5.8209 |
5.8157 |
5.7758 |
5.7850 |
5.7948 |
5.8209 |
5.8276 |
5.8750 |
57/8-16 |
UN |
5.8750 |
5.8656 |
5.8344 |
5.8298 |
5.8006 |
5.8070 |
5.8159 |
5.8344 |
5.8404 |
5.8750 |
6-4 |
UN |
6.0000 |
5.9762 |
5.8376 |
5.8283 |
5.7023 |
5.7290 |
5.7594 |
5.8376 |
5.8496 |
6.0000 |
6-6 |
UN |
6.0000 |
5.9818 |
5.8917 |
5.8835 |
5.8015 |
5.8200 |
5.8396 |
5.8917 |
5.9024 |
6.0000 |
6-8 |
UN |
6.0000 |
5.9850 |
5.9188 |
5.9112 |
5.8512 |
5.8650 |
5.8797 |
5.9188 |
5.9287 |
6.0000 |
6-12 |
UN |
6.0000 |
5.9886 |
5.9459 |
5.9407 |
5.9008 |
5.9100 |
5.9198 |
5.9459 |
5.9526 |
6.0000 |
6-16 |
UN |
6.0000 |
5.9906 |
5.9594 |
5.9547 |
5.9256 |
5.9320 |
5.9409 |
5.9594 |
5.9655 |
6.0000 |