|
粗牙、紧密级外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 |
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|
max |
公差 |
min |
max |
公差 |
min |
max |
公差 |
min |
||
|
1/8 |
40 |
0.1250 |
0.0035 |
0.1215 |
0.1090 |
0.0019 |
0.1071 |
0.0930 |
0.0040 |
0.0890 |
|
3/16 |
24 |
0.1875 |
0.0043 |
0.1832 |
0.1608 |
0.0023 |
0.1585 |
0.1341 |
0.0050 |
0.1291 |
|
1/4 |
20 |
0.2500 |
0.0048 |
0.2452 |
0.2180 |
0.0026 |
0.2154 |
0.1860 |
0.0055 |
0.1805 |
|
|
|
|
|
|
|
|
|
|
|
|
|
5/16 |
18 |
0.3125 |
0.0052 |
0.3073 |
0.2769 |
0.0028 |
0.2741 |
0.2413 |
0.0059 |
0.2354 |
|
3/8 |
16 |
0.3750 |
0.0055 |
0.3695 |
0.3350 |
0.0030 |
0.3320 |
0.2950 |
0.0062 |
0.2888 |
|
7/16 |
14 |
0.4375 |
0.0059 |
0.4316 |
0.3918 |
0.0032 |
0.3886 |
0.3461 |
0.0067 |
0.3394 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1/2 |
12 |
0.5000 |
0.0063 |
0.4937 |
0.4466 |
0.0034 |
0.4432 |
0.3932 |
0.0072 |
0.3860 |
|
9/16 |
12 |
0.5625 |
0.0065 |
0.5560 |
0.5091 |
0.0036 |
0.5055 |
0.4557 |
0.0074 |
0.4483 |
|
5/8 |
11 |
0.6250 |
0.0067 |
0.6183 |
0.5668 |
0.0037 |
0.5631 |
0.5076 |
0.0076 |
0.5010 |
|
|
|
|
|
|
|
|
|
|
|
|
|
11/16 |
11 |
0.6875 |
0.0068 |
0.6807 |
0.6293 |
0.0038 |
0.6255 |
0.5711 |
0.0077 |
0.5634 |
|
3/4 |
10 |
0.7500 |
0.0072 |
0.7428 |
0.6860 |
0.0040 |
0.6820 |
0.6220 |
0.0081 |
0.6139 |
|
7/8 |
9 |
0.8750 |
0.0076 |
0.8674 |
0.8039 |
0.0043 |
0.7996 |
0.7328 |
0.0086 |
0.7242 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
8 |
1.0000 |
0.0080 |
0.9920 |
0.9200 |
0.0045 |
0.9155 |
0.8400 |
0.0091 |
0.8309 |
|
11/8 |
7 |
1.1250 |
0.0086 |
1.1164 |
1.0335 |
0.0048 |
1.0287 |
0.9420 |
0.0097 |
0.9323 |
|
11/4 |
7 |
1.2500 |
0.0087 |
1.2413 |
1.1585 |
0.0049 |
1.1536 |
1.0670 |
0.0098 |
1.0572 |
|
|
|
|
|
|
|
|
|
|
|
|
|
11/2 |
6 |
1.5000 |
0.0094 |
1.4906 |
1.3933 |
0.0053 |
1.3880 |
1.2866 |
0.0106 |
1.2760 |
|
13/4 |
5 |
1.7500 |
0.0102 |
1.7398 |
1.6219 |
0.0057 |
1.6162 |
1.4938 |
0.0115 |
1.4823 |
|
2 |
4.5 |
2.0000 |
0.0108 |
1.9892 |
1.8577 |
0.0061 |
1.8516 |
1.7154 |
0.0122 |
1.7032 |
|
|
|
|
|
|
|
|
|
|
|
|
|
21/4 |
4 |
2.2500 |
0.0114 |
2.2386 |
2.0899 |
0.0064 |
2.0835 |
1.9298 |
0.0129 |
1.9169 |
|
21/2 |
4 |
2.5000 |
0.0116 |
2.4884 |
2.3399 |
0.0066 |
2.3333 |
2.1798 |
0.0131 |
2.1667 |
|
23/4 |
3.5 |
2.7500 |
0.0123 |
2.7377 |
2.5670 |
0.0070 |
2.5600 |
2.3840 |
0.0139 |
2.3701 |
|
|
|
|
|
|
|
|
|
|
|
|
|
3 |
3.5 |
3.0000 |
0.0125 |
2.9875 |
2.8170 |
0.0072 |
2.8098 |
2.6340 |
0.0141 |
2.6199 |
|
31/4 |
3.25 |
3.2500 |
0.0130 |
3.2370 |
3.0530 |
0.0074 |
3.0456 |
2.8560 |
0.0146 |
2.8414 |
|
31/2 |
3.25 |
3.5000 |
0.0132 |
3.4868 |
3.3030 |
0.0076 |
3.2954 |
3.1060 |
0.0148 |
3.0912 |
|
|
|
|
|
|
|
|
|
|
|
|
|
33/4 |
3 |
3.7500 |
0.0136 |
3.7364 |
3.5366 |
0.0079 |
3.5287 |
3.3232 |
0.0154 |
3.3078 |
|
4 |
3 |
4.0000 |
0.0138 |
3.9862 |
3.7866 |
0.0080 |
3.7786 |
3.5732 |
0.0155 |
3.5577 |
|
41/2 |
2.875 |
4.5000 |
0.0143 |
4.4857 |
4.2773 |
0.0084 |
4.2689 |
4.0546 |
0.0161 |
4.0385 |
|
|
|
|
|
|
|
|
|
|
|
|
|
5 |
2.75 |
5.0000 |
0.0148 |
4.9852 |
4.7672 |
0.0088 |
4.7584 |
4.5344 |
0.0166 |
4.5178 |
|
51/2 |
2.625 |
5.5000 |
0.0153 |
5.4847 |
5.2561 |
0.0091 |
5.2470 |
5.0122 |
0.0171 |
4.9551 |
|
6 |
2.5 |
6.0000 |
0.0158 |
5.9842 |
5.7439 |
0.0094 |
5.7345 |
5.4878 |
0.0177 |
5.4701 |