|
粗牙、中等级内螺纹的公差和极限尺寸 in |
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|
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||
|
min |
max |
公差 |
min |
max |
公差 |
min |
||
|
1/8 |
40 |
0.1250 |
0.1119 |
0.0029 |
0.1090 |
0.1020 |
0.0090 |
0.0930 |
|
3/16 |
24 |
0.1875 |
0.1643 |
0.0035 |
0.1608 |
0.1474 |
0.0133 |
0.1341 |
|
1/4 |
20 |
0.2500 |
0.2219 |
0.0039 |
0.2180 |
0.2030 |
0.0170 |
0.1860 |
|
|
|
|
|
|
|
|
|
|
|
5/16 |
18 |
0.3125 |
0.2811 |
0.0042 |
0.2769 |
0.2594 |
0.0181 |
0.2413 |
|
3/8 |
16 |
0.3750 |
0.3395 |
0.0045 |
0.3350 |
0.3145 |
0.0195 |
0.2950 |
|
7/16 |
14 |
0.4375 |
0.3966 |
0.0048 |
0.3918 |
0.3674 |
0.0213 |
0.3461 |
|
|
|
|
|
|
|
|
|
|
|
1/2 |
12 |
0.5000 |
0.4518 |
0.0052 |
0.4466 |
0.4169 |
0.0237 |
0.3932 |
|
9/16 |
12 |
0.5625 |
0.5144 |
0.0053 |
0.5091 |
0.4794 |
0.0237 |
0.4557 |
|
5/8 |
11 |
0.6250 |
0.5724 |
0.0056 |
0.5668 |
0.5338 |
0.0252 |
0.5086 |
|
|
|
|
|
|
|
|
|
|
|
11/16 |
11 |
0.6875 |
0.6351 |
0.0058 |
0.6293 |
0.5963 |
0.0252 |
0.5711 |
|
3/4 |
10 |
0.7500 |
0.6920 |
0.0060 |
0.6860 |
0.6490 |
0.0270 |
0.6220 |
|
7/8 |
9 |
0.8750 |
0.8103 |
0.0064 |
0.8039 |
0.7620 |
0.0292 |
0.7328 |
|
|
|
|
|
|
|
|
|
|
|
1 |
8 |
1.0000 |
0.9268 |
0.0068 |
0.9200 |
0.8720 |
0.0320 |
0.8400 |
|
11/8 |
7 |
1.1250 |
1.0407 |
0.0072 |
1.0335 |
0.9776 |
0.0356 |
0.9420 |
|
11/4 |
7 |
1.2500 |
1.1659 |
0.0074 |
1.1585 |
1.1026 |
0.0356 |
1.0670 |
|
|
|
|
|
|
|
|
|
|
|
11/2 |
6 |
1.5000 |
1.4013 |
0.0080 |
1.3933 |
1.3269 |
0.0403 |
1.2866 |
|
13/4 |
5 |
1.7500 |
1.6305 |
0.0086 |
1.6219 |
1.5408 |
0.0470 |
1.4938 |
|
2 |
4.5 |
2.0000 |
1.8668 |
0.0091 |
1.8577 |
1.7668 |
0.0514 |
1.7154 |
|
|
|
|
|
|
|
|
|
|
|
21/4 |
4 |
2.2500 |
2.0995 |
0.0096 |
2.0899 |
1.9868 |
0.0570 |
1.9298 |
|
21/2 |
4 |
2.5000 |
2.3499 |
0.0100 |
2.3399 |
2.2368 |
0.0570 |
2.1798 |
|
23/4 |
3.5 |
2.7500 |
2.5774 |
0.0104 |
2.5670 |
2.4481 |
0.0641 |
2.3840 |
|
|
|
|
|
|
|
|
|
|
|
3 |
3.5 |
3.0000 |
2.8278 |
0.0108 |
2.8170 |
2.6981 |
0.0641 |
2.6340 |
|
31/4 |
3.25 |
3.2500 |
3.0641 |
0.0111 |
3.0530 |
2.9245 |
0.0685 |
2.8560 |
|
31/2 |
3.25 |
3.5000 |
3.3144 |
0.0114 |
3.3030 |
3.1745 |
0.0685 |
3.1060 |
|
|
|
|
|
|
|
|
|
|
|
33/4 |
3 |
3.7500 |
3.5484 |
0.0118 |
3.5366 |
3.3969 |
0.0737 |
3.3232 |
|
4 |
3 |
4.0000 |
3.7987 |
0.0121 |
3.7866 |
3.6469 |
0.0737 |
3.5732 |
|
41/2 |
2.875 |
4.5000 |
4.2899 |
0.0126 |
4.2773 |
4.1312 |
0.0766 |
4.0546 |
|
|
|
|
|
|
|
|
|
|
|
5 |
2.75 |
5.0000 |
4.7803 |
0.0131 |
4.7672 |
4.6141 |
0.0797 |
4.5344 |
|
51/2 |
2.625 |
5.5000 |
5.2698 |
0.0137 |
5.2561 |
5.0954 |
0.0832 |
5.0122 |
|
6 |
2.5 |
6.0000 |
5.7580 |
0.0141 |
5.7439 |
5.5748 |
0.0870 |
5.4878 |