|
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 |