|
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 |