公差
公差带种类及其选用
惠氏螺纹的公差带种类及其选用 |
||
---|---|---|
螺纹 |
公差带 |
用 途 |
内螺纹 (nut) |
中等(medium) |
质量较高的一般螺纹件 |
普通(normal) |
大量生产的商品螺纹紧固件 |
|
外螺纹 (bolt) |
紧密(close) |
对螺距和牙型有特别高的精度要求、要求良好的紧密配合 |
中等(medium) |
质量较高的一般螺纹件 |
|
自由(free) |
大量生产的商品螺纹紧固件 |
|
注:图中中等级外螺纹的中径公差大小为100个单位,而其他公差值大小则为其相比于前者公差大小的百分比。 |
公差带位置
公差带位置 |
|
---|---|
分类 |
图 形 |
惠氏中等内螺纹与紧密外螺纹配合的公差带位置 |
|
惠氏普通内螺纹与中等或自由外螺纹配合的公差带位置(直径小于或等于3/4in) |
|
注:容隙(ALLOW ANCE)术语是美制螺纹和英制螺纹标准内的重要技术参数,但是米制螺纹标准不使用此术语,我国技术人员对此术语的翻译名称也不统一。在惠氏螺纹标准内,容隙对应米制普通螺纹的外螺纹基本偏差(es,负值)。 |
粗牙、紧密级外螺纹的公差和极限尺寸
粗牙、紧密级外螺纹的公差和极限尺寸 in |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||
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 |
粗牙、中等级内螺纹的公差和极限尺寸
粗牙、中等级内螺纹的公差和极限尺寸 in |
||||||||
---|---|---|---|---|---|---|---|---|
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 |
粗牙、中等级外螺纹的公差和极限尺寸
粗牙、中等级外螺纹的公差和极限尺寸 in |
||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(a)公称直径小于和等于3/4in |
||||||||||||||||||||||
公称直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||||||||||||||
不镀或镀前 |
镀后 |
不镀或镀前 |
镀后 |
不镀或镀前 |
镀后 |
|||||||||||||||||
max |
公差 |
min |
max |
max |
公差 |
min |
max |
max |
公差 |
min |
max |
|||||||||||
1/8 |
40 |
0.1238 |
0.0045 |
0.1193 |
0.1250 |
0.1078 |
0.0029 |
0.1049 |
0.1090 |
0.0918 |
0.0061 |
0.0857 |
0.0930 |
|||||||||
3/16 |
24 |
0.1863 |
0.0055 |
0.1808 |
0.1870 |
0.1596 |
0.0035 |
0.1561 |
0.1608 |
0.1329 |
0.0076 |
0.1253 |
0.1341 |
|||||||||
1/4 |
20 |
0.2488 |
0.0061 |
0.2427 |
0.2500 |
0.2168 |
0.0039 |
0.2129 |
0.2180 |
0.1848 |
0.0084 |
0.1764 |
0.1860 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
5/16 |
18 |
0.3112 |
0.0066 |
0.3046 |
0.3125 |
0.2756 |
0.0042 |
0.2714 |
0.2769 |
0.2400 |
0.0089 |
0.2311 |
0.2413 |
|||||||||
3/8 |
16 |
0.3736 |
0.0070 |
0.3666 |
0.3750 |
0.3336 |
0.0045 |
0.3291 |
0.3350 |
0.2936 |
0.0095 |
0.2841 |
0.2950 |
|||||||||
7/16 |
14 |
0.4360 |
0.0075 |
0.4285 |
0.4375 |
0.3903 |
0.0048 |
0.3855 |
0.3918 |
0.3446 |
0.0101 |
0.3345 |
0.3461 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
1/2 |
12 |
0.4985 |
0.0081 |
0.4904 |
0.5000 |
0.4451 |
0.0052 |
0.4399 |
0.4466 |
0.3917 |
0.0110 |
0.3807 |
0.3932 |
|||||||||
9/16 |
12 |
0.5609 |
0.0082 |
0.5527 |
0.5625 |
0.5075 |
0.0053 |
0.5022 |
0.5071 |
0.4541 |
0.0111 |
0.4430 |
0.4557 |
|||||||||
5/8 |
11 |
0.6233 |
0.0086 |
0.6147 |
0.6250 |
0.5651 |
0.0056 |
0.5595 |
0.5668 |
0.5069 |
0.0116 |
0.4953 |
0.5086 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
11/16 |
11 |
0.6858 |
0.0088 |
0.6770 |
0.6875 |
0.6276 |
0.0058 |
0.6218 |
0.6293 |
0.5694 |
0.0118 |
0.5576 |
0.5711 |
|||||||||
3/4 |
10 |
0.7482 |
0.0092 |
0.7390 |
0.7500 |
0.6842 |
0.0060 |
0.6782 |
0.6860 |
0.6202 |
0.0123 |
0.6079 |
0.6220 |
|||||||||
(b)公称直径大于3/4in |
||||||||||||||||||||||
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||||||||||||||
max |
公差 |
min |
max |
公差 |
min |
max |
公差 |
min |
||||||||||||||
7/8 |
9 |
0.8750 |
0.0097 |
0.8653 |
0.8039 |
0.0064 |
0.7975 |
0.7328 |
0.0131 |
0.7197 |
||||||||||||
1 |
8 |
1.0000 |
0.0103 |
0.9897 |
0.9200 |
0.0068 |
0.9132 |
0.8400 |
0.0139 |
0.8261 |
||||||||||||
11/8 |
7 |
1.1250 |
0.0110 |
1.1140 |
1.0035 |
0.0072 |
1.0263 |
0.9420 |
0.0148 |
0.9272 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
11/4 |
7 |
1.2500 |
0.0112 |
1.2388 |
1.1585 |
0.0074 |
1.1511 |
1.0670 |
0.0150 |
1.0520 |
||||||||||||
11/2 |
6 |
1.5000 |
0.0121 |
1.4879 |
1.3933 |
0.0080 |
1.3853 |
1.2866 |
0.0162 |
1.2704 |
||||||||||||
13/4 |
5 |
1.7500 |
0.0131 |
1.7369 |
1.6219 |
0.0086 |
1.6133 |
1.4938 |
0.0175 |
1.4763 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
2 |
4.5 |
2.0000 |
0.0138 |
1.9862 |
1.8577 |
0.0091 |
1.8486 |
1.7154 |
0.0185 |
1.6969 |
||||||||||||
21/4 |
4 |
2.2500 |
0.0146 |
2.2354 |
2.0899 |
0.0096 |
2.0803 |
1.9298 |
0.0196 |
1.9102 |
||||||||||||
21/2 |
4 |
2.5000 |
0.0150 |
2.4850 |
2.3399 |
0.0100 |
2.3299 |
2.1798 |
0.0200 |
2.1598 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
23/4 |
3.5 |
2.7500 |
0.0157 |
2.7343 |
2.5670 |
0.0104 |
2.5566 |
2.3840 |
0.0211 |
2.3629 |
||||||||||||
3 |
3.5 |
3.0000 |
0.0161 |
2.9839 |
2.8170 |
0.0108 |
2.8062 |
2.6340 |
0.0215 |
2.6125 |
||||||||||||
31/4 |
3.25 |
3.2500 |
0.0167 |
3.2333 |
3.0530 |
0.0111 |
3.0419 |
2.8560 |
0.0222 |
2.8338 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
31/2 |
3.25 |
3.5000 |
0.0170 |
3.4830 |
3.3030 |
0.0114 |
3.2916 |
3.1060 |
0.0225 |
3.0835 |
||||||||||||
33/4 |
3 |
3.7500 |
0.0176 |
3.7324 |
3.5366 |
0.0118 |
3.5247 |
3.3232 |
0.0234 |
3.2998 |
||||||||||||
4 |
3 |
4.0000 |
0.0178 |
3.9822 |
3.7866 |
0.0121 |
3.7745 |
3.5732 |
0.0236 |
3.5496 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
41/2 |
2.875 |
4.5000 |
0.0185 |
4.4815 |
4.2773 |
0.0126 |
4.2647 |
4.0546 |
0.0244 |
4.0302 |
||||||||||||
5 |
2.75 |
5.0000 |
0.0192 |
4.9808 |
4.7672 |
0.0131 |
4.7541 |
4.5344 |
0.0252 |
4.5092 |
||||||||||||
5 |
2.625 |
5.5000 |
0.0198 |
5.4802 |
5.2561 |
0.0137 |
5.2424 |
5.0122 |
0.0260 |
4.9862 |
||||||||||||
6 |
2.5 |
6.0000 |
0.0205 |
5.9795 |
5.7439 |
0.0141 |
5.7298 |
5.4878 |
0.0268 |
5.4610 |
粗牙、普通级内螺纹的公差和极限尺寸
粗牙、普通级内螺纹的公差和极限尺寸 in |
||||||||
---|---|---|---|---|---|---|---|---|
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 |
0.1133 |
0.0043 |
0.1090 |
0.1020 |
0.0090 |
0.0930 |
3/16 |
24 |
0.1875 |
0.1660 |
0.0052 |
0.1608 |
0.1474 |
0.0133 |
0.1341 |
1/4 |
20 |
0.2500 |
0.2238 |
0.0058 |
0.2180 |
0.2030 |
0.0170 |
0.1860 |
|
|
|
|
|
|
|
|
|
5/16 |
18 |
0.3125 |
0.2832 |
0.0063 |
0.2769 |
0.2594 |
0.0181 |
0.2413 |
3/8 |
16 |
0.3750 |
0.3418 |
0.0068 |
0.3350 |
0.3145 |
0.0195 |
0.2950 |
7/16 |
14 |
0.4375 |
0.3991 |
0.0073 |
0.3918 |
0.3674 |
0.0213 |
0.3461 |
|
|
|
|
|
|
|
|
|
1/2 |
12 |
0.5000 |
0.4543 |
0.0077 |
0.4466 |
0.4169 |
0.0237 |
0.3932 |
9/16 |
12 |
0.5625 |
0.5171 |
0.0080 |
0.5091 |
0.4794 |
0.0237 |
0.4557 |
5/8 |
11 |
0.6250 |
0.5752 |
0.0084 |
0.5668 |
0.5338 |
0.0252 |
0.5086 |
|
|
|
|
|
|
|
|
|
11/16 |
11 |
0.6875 |
0.6379 |
0.0086 |
0.6293 |
0.5963 |
0.0252 |
0.5711 |
3/4 |
10 |
0.7500 |
0.6950 |
0.0090 |
0.6860 |
0.6490 |
0.0270 |
0.6220 |
7/8 |
9 |
0.8750 |
0.8135 |
0.0096 |
0.8039 |
0.7620 |
0.0292 |
0.7328 |
|
|
|
|
|
|
|
|
|
1 |
8 |
1.0000 |
0.9302 |
0.0102 |
0.9200 |
0.8720 |
0.0320 |
0.8400 |
11/8 |
7 |
1.1250 |
1.0442 |
0.0107 |
1.0335 |
0.9776 |
0.0356 |
0.9420 |
11/4 |
7 |
1.2500 |
1.1696 |
0.0111 |
1.1585 |
1.1026 |
0.0356 |
1.0670 |
|
|
|
|
|
|
|
|
|
11/2 |
6 |
1.5000 |
1.4053 |
0.0120 |
1.3933 |
1.3269 |
0.0403 |
1.2866 |
13/4 |
5 |
1.7500 |
1.6348 |
0.0129 |
1.6219 |
1.5408 |
0.0470 |
1.4938 |
2 |
4.5 |
2.0000 |
1.8714 |
0.0137 |
1.8577 |
1.7668 |
0.0514 |
1.7154 |
|
|
|
|
|
|
|
|
|
21/4 |
4 |
2.2500 |
2.1043 |
0.0144 |
2.0899 |
1.9868 |
0.0570 |
1.9298 |
21/2 |
4 |
2.5000 |
2.3548 |
0.0149 |
2.3399 |
2.2368 |
0.0570 |
2.1798 |
23/4 |
3.5 |
2.7500 |
2.5827 |
0.0157 |
2.5670 |
2.4481 |
0.0641 |
2.3840 |
|
|
|
|
|
|
|
|
|
3 |
3.5 |
3.0000 |
2.8331 |
0.0161 |
2.8170 |
2.6981 |
0.0641 |
2.6340 |
31/4 |
3.25 |
3.2500 |
3.0697 |
0.0167 |
3.0530 |
2.9245 |
0.0685 |
2.8560 |
31/2 |
3.25 |
3.5000 |
3.3201 |
0.0171 |
3.3030 |
3.1745 |
0.0685 |
3.1060 |
|
|
|
|
|
|
|
|
|
33/4 |
3 |
3.7500 |
3.5543 |
0.0177 |
3.5366 |
3.3969 |
0.0737 |
3.3232 |
4 |
3 |
4.0000 |
3.8047 |
0.0181 |
3.7866 |
3.6469 |
0.0737 |
3.5732 |
41/2 |
2.875 |
4.5000 |
4.2962 |
0.0189 |
4.2773 |
4.1312 |
0.0766 |
4.0546 |
|
|
|
|
|
|
|
|
|
5 |
2.75 |
5.0000 |
4.7869 |
0.0197 |
4.7672 |
4.6141 |
0.0797 |
4.5344 |
51/2 |
2.625 |
5.5000 |
5.2766 |
0.0205 |
5.2561 |
5.0954 |
0.0832 |
5.0122 |
6 |
2.5 |
6.0000 |
5.7651 |
0.0212 |
5.7439 |
5.5748 |
0.0870 |
5.4878 |
粗牙、自由级外螺纹的公差和极限尺寸
粗牙、自由级外螺纹的公差和极限尺寸 in |
||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(a)公称直径小于和等于3/4in |
||||||||||||||||||||||
公称直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||||||||||||||
不镀或镀前 |
镀后 |
不镀或镀前 |
镀后 |
不镀或镀前 |
镀后 |
|||||||||||||||||
max |
公差 |
min |
max |
max |
公差 |
min |
max |
max |
公差 |
min |
max |
|||||||||||
1/8 |
40 |
0.1238 |
0.0059 |
0.1179 |
0.1250 |
0.1078 |
0.0043 |
0.1035 |
0.1090 |
0.0918 |
0.0075 |
0.0843 |
0.0930 |
|||||||||
3/16 |
24 |
0.1863 |
0.0072 |
0.1791 |
0.1870 |
0.1596 |
0.0052 |
0.1544 |
0.1608 |
0.1329 |
0.0093 |
0.1236 |
0.1341 |
|||||||||
1/4 |
20 |
0.2488 |
0.0080 |
0.2408 |
0.2500 |
0.2168 |
0.0058 |
0.2110 |
0.2180 |
0.1848 |
0.0103 |
0.1745 |
0.1860 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
5/16 |
18 |
0.3112 |
0.0087 |
0.3025 |
0.3125 |
0.2756 |
0.0063 |
0.2693 |
0.2769 |
0.2400 |
0.0110 |
0.2290 |
0.2413 |
|||||||||
3/8 |
16 |
0.3736 |
0.0093 |
0.3643 |
0.3750 |
0.3336 |
0.0068 |
0.3268 |
0.3350 |
0.2936 |
0.0118 |
0.2818 |
0.2950 |
|||||||||
7/16 |
14 |
0.4360 |
0.0100 |
0.4260 |
0.4375 |
0.3903 |
0.0073 |
0.3830 |
0.3918 |
0.3446 |
0.0126 |
0.3320 |
0.3461 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
1/2 |
12 |
0.4985 |
0.0106 |
0.4879 |
0.5000 |
0.4451 |
0.0077 |
0.4374 |
0.4466 |
0.3917 |
0.0135 |
0.3782 |
0.3932 |
|||||||||
9/16 |
12 |
0.5609 |
0.0109 |
0.5500 |
0.5625 |
0.5075 |
0.0080 |
0.4995 |
0.5071 |
0.4541 |
0.0138 |
0.4403 |
0.4557 |
|||||||||
5/8 |
11 |
0.6233 |
0.0114 |
0.6119 |
0.6250 |
0.5651 |
0.0084 |
0.5567 |
0.5668 |
0.5069 |
0.0144 |
0.4925 |
0.5086 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
11/16 |
11 |
0.6858 |
0.0116 |
0.6742 |
0.6875 |
0.6276 |
0.0086 |
0.6190 |
0.6293 |
0.5694 |
0.0146 |
0.5548 |
0.5711 |
|||||||||
3/4 |
10 |
0.7482 |
0.0122 |
0.7360 |
0.7500 |
0.6842 |
0.0090 |
0.6752 |
0.6860 |
0.6202 |
0.0153 |
0.6049 |
0.6220 |
|||||||||
(b)公称直径大于3/4in |
||||||||||||||||||||||
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||||||||||||||
max |
公差 |
min |
max |
公差 |
min |
max |
公差 |
min |
||||||||||||||
7/8 |
9 |
0.8750 |
0.0129 |
0.8621 |
0.8039 |
0.0096 |
0.7943 |
0.7328 |
0.0163 |
0.7165 |
||||||||||||
1 |
8 |
1.0000 |
0.0137 |
0.9863 |
0.9200 |
0.0102 |
0.9098 |
0.8400 |
0.0173 |
0.8227 |
||||||||||||
11/8 |
7 |
1.1250 |
0.0145 |
1.1105 |
1.0035 |
0.0107 |
1.0228 |
0.9420 |
0.0183 |
0.9237 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
11/4 |
7 |
1.2500 |
0.0149 |
1.2351 |
1.1585 |
0.0111 |
1.1474 |
1.0670 |
0.0187 |
1.0483 |
||||||||||||
11/2 |
6 |
1.5000 |
0.0161 |
1.4839 |
1.3933 |
0.012 |
1.3813 |
1.2866 |
0.0202 |
1.2664 |
||||||||||||
13/4 |
5 |
1.7500 |
0.0174 |
1.7326 |
1.6219 |
0.0129 |
1.6090 |
1.4938 |
0.0218 |
1.4720 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
2 |
4.5 |
2.0000 |
0.0184 |
1.9816 |
1.8577 |
0.0137 |
1.8440 |
1.7154 |
0.0231 |
1.6923 |
||||||||||||
21/4 |
4 |
2.2500 |
0.0194 |
2.2306 |
2.0899 |
0.0144 |
2.0755 |
1.9298 |
0.0244 |
1.9054 |
||||||||||||
21/2 |
4 |
2.5000 |
0.0199 |
2.4801 |
2.3399 |
0.0149 |
2.3250 |
2.1798 |
0.0249 |
2.1549 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
23/4 |
3.5 |
2.7500 |
0.0210 |
2.7290 |
2.5670 |
0.0157 |
2.5513 |
2.3840 |
0.0264 |
2.3576 |
||||||||||||
3 |
3.5 |
3.0000 |
0.0214 |
2.9886 |
2.8170 |
0.0161 |
2.8009 |
2.6340 |
0.0268 |
2.6072 |
||||||||||||
31/4 |
3.25 |
3.2500 |
0.0223 |
3.2277 |
3.0530 |
0.0167 |
3.0363 |
2.8560 |
0.0278 |
2.8282 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
31/2 |
3.25 |
3.5000 |
0.0227 |
3.4773 |
3.3030 |
0.0171 |
3.2859 |
3.1060 |
0.0282 |
3.0778 |
||||||||||||
33/4 |
3 |
3.7500 |
0.0235 |
3.7265 |
3.5366 |
0.0177 |
3.5189 |
3.3232 |
0.0293 |
3.2939 |
||||||||||||
4 |
3 |
4.0000 |
0.0239 |
3.9761 |
3.7866 |
0.0181 |
3.7685 |
3.5732 |
0.0296 |
3.5436 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
41/2 |
2.875 |
4.5000 |
0.0248 |
4.4752 |
4.2773 |
0.0189 |
4.2584 |
4.0546 |
0.0307 |
4.0239 |
||||||||||||
5 |
2.75 |
5.0000 |
0.0257 |
4.9743 |
4.7672 |
0.0197 |
4.7475 |
4.5344 |
0.0318 |
4.5026 |
||||||||||||
5 |
2.625 |
5.5000 |
0.0267 |
5.4733 |
5.2561 |
0.0205 |
5.2356 |
5.0122 |
0.0328 |
4.9794 |
||||||||||||
6 |
2.5 |
6.0000 |
0.0275 |
5.9725 |
5.7439 |
0.0212 |
5.7227 |
5.4878 |
0.0339 |
5.4539 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
细牙、紧密级外螺纹的公差和极限尺寸
细牙、紧密级外螺纹的公差和极限尺寸 in |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||
max |
公差 |
min |
max |
公差 |
min |
max |
公差 |
min |
||
3/16 |
32 |
0.1875 |
0.0040 |
0.1835 |
0.1675 |
0.0022 |
0.1653 |
0.1475 |
0.0045 |
0.1430 |
7/32 |
28 |
0.2188 |
0.0043 |
0.2145 |
0.1959 |
0.0024 |
0.1935 |
0.1730 |
0.0049 |
0.1681 |
1/4 |
26 |
0.2500 |
0.0045 |
0.2455 |
0.2254 |
0.0025 |
0.2229 |
0.2008 |
0.0050 |
0.1958 |
|
|
|
|
|
|
|
|
|
|
|
9/32 |
26 |
0.2812 |
0.0046 |
0.2766 |
0.2566 |
0.0026 |
0.2540 |
0.2320 |
0.0051 |
0.2269 |
5/16 |
22 |
0.3125 |
0.0048 |
0.3077 |
0.2834 |
0.0027 |
0.2807 |
0.2543 |
0.0055 |
0.2488 |
3/8 |
20 |
0.3750 |
0.0051 |
0.3699 |
0.3430 |
0.0029 |
0.3401 |
0.3110 |
0.0058 |
0.3052 |
|
|
|
|
|
|
|
|
|
|
|
7/16 |
18 |
0.4375 |
0.0055 |
0.4320 |
0.4019 |
0.0031 |
0.3988 |
0.3663 |
0.0062 |
0.3601 |
1/2 |
16 |
0.5000 |
0.0058 |
0.4942 |
0.4600 |
0.0033 |
0.4567 |
0.4200 |
0.0065 |
0.4135 |
9/16 |
16 |
0.5625 |
0.0059 |
0.5566 |
0.5225 |
0.0034 |
0.5191 |
0.4825 |
0.0066 |
0.4759 |
|
|
|
|
|
|
|
|
|
|
|
5/8 |
14 |
0.6250 |
0.0063 |
0.6187 |
0.5793 |
0.0036 |
0.5757 |
0.5336 |
0.0071 |
0.5265 |
11/16 |
14 |
0.6875 |
0.0064 |
0.6711 |
0.6418 |
0.0037 |
0.6381 |
0.5961 |
0.0072 |
0.5889 |
3/4 |
12 |
0.7500 |
0.0068 |
0.7432 |
0.6966 |
0.0039 |
0.6927 |
0.6432 |
0.0077 |
0.6355 |
|
|
|
|
|
|
|
|
|
|
|
7/8 |
11 |
0.8750 |
0.0072 |
0.8678 |
0.8468 |
0.0042 |
0.8126 |
0.7586 |
0.0081 |
0.7505 |
1 |
10 |
1.0000 |
0.0076 |
0.9924 |
0.9360 |
0.0044 |
0.9316 |
0.8720 |
0.0085 |
0.8635 |
|
|
|
|
|
|
|
|
|
|
|
11/8 |
9 |
1.1250 |
0.0079 |
1.1171 |
1.0539 |
0.0046 |
1.0493 |
0.9828 |
0.0089 |
0.9739 |
11/4 |
9 |
1.2500 |
0.0084 |
1.2419 |
1.1789 |
0.0048 |
1.1741 |
1.1078 |
0.0091 |
1.0987 |
13/8 |
8 |
1.3750 |
0.0085 |
1.3665 |
1.2950 |
0.0050 |
1.2900 |
1.2150 |
0.0096 |
1.2054 |
|
|
|
|
|
|
|
|
|
|
|
11/2 |
8 |
1.5000 |
0.0087 |
1.4913 |
1.4200 |
0.0052 |
1.4148 |
1.3400 |
0.0098 |
1.3302 |
15/8 |
8 |
1.6250 |
0.0088 |
1.6162 |
1.5450 |
0.0053 |
1.5397 |
1.4650 |
0.0099 |
1.4551 |
13/4 |
7 |
1.7500 |
0.0093 |
1.7407 |
1.6585 |
0.0055 |
1.6530 |
1.5670 |
0.0104 |
1.5566 |
|
|
|
|
|
|
|
|
|
|
|
2 |
7 |
2.0000 |
0.0095 |
1.9905 |
1.9085 |
0.0058 |
1.9027 |
1.8170 |
0.0107 |
1.8063 |
21/4 |
6 |
2.2500 |
0.0102 |
2.2398 |
2.1433 |
0.0061 |
2.1372 |
2.0366 |
0.0114 |
2.0252 |
21/2 |
6 |
2.5000 |
0.0104 |
2.4896 |
2.3933 |
0.0063 |
2.3870 |
2.2866 |
0.0116 |
2.2750 |
23/4 |
6 |
2.7500 |
0.0106 |
2.7394 |
2.6433 |
0.0065 |
2.6368 |
2.5366 |
0.0119 |
2.5247 |
3 |
5 |
3.0000 |
0.0113 |
2.9887 |
2.8719 |
0.0069 |
2.8650 |
2.7438 |
0.0127 |
2.7311 |
细牙、中等级内螺纹的公差和极限尺寸
细牙、中等级内螺纹的公差和极限尺寸 in |
||||||||
---|---|---|---|---|---|---|---|---|
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||
min |
max |
公差 |
min |
max |
公差 |
min |
||
3/16 |
32 |
0.1875 |
0.1708 |
0.0033 |
0.1675 |
0.1577 |
0.0102 |
0.1475 |
7/32 |
28 |
0.2188 |
0.1995 |
0.0036 |
0.1959 |
0.1841 |
0.0111 |
0.1730 |
1/4 |
26 |
0.2500 |
0.2291 |
0.0037 |
0.2254 |
0.2125 |
0.0117 |
0.2008 |
|
|
|
|
|
|
|
|
|
9/32 |
26 |
0.2812 |
0.2605 |
0.0039 |
0.2566 |
0.2437 |
0.0117 |
0.2320 |
5/16 |
22 |
0.3125 |
0.2875 |
0.0041 |
0.2834 |
0.2684 |
0.0141 |
0.2543 |
3/8 |
20 |
0.3750 |
0.3474 |
0.0044 |
0.3430 |
0.3280 |
0.0170 |
0.3110 |
|
|
|
|
|
|
|
|
|
7/16 |
18 |
0.4375 |
0.4066 |
0.0047 |
0.4019 |
0.3844 |
0.0181 |
0.3663 |
1/2 |
16 |
0.5000 |
0.4650 |
0.0050 |
0.4600 |
0.4395 |
0.0195 |
0.4200 |
9/16 |
16 |
0.5625 |
0.5277 |
0.0052 |
0.5225 |
0.5020 |
0.0195 |
0.4825 |
|
|
|
|
|
|
|
|
|
5/8 |
14 |
0.6250 |
0.5847 |
0.0054 |
0.5793 |
0.5549 |
0.0213 |
0.5336 |
11/16 |
14 |
0.6875 |
0.6474 |
0.0056 |
0.6418 |
0.6174 |
0.0213 |
0.5961 |
3/4 |
12 |
0.7500 |
0.7025 |
0.0059 |
0.6966 |
0.6669 |
0.0237 |
0.6432 |
|
|
|
|
|
|
|
|
|
7/8 |
11 |
0.8750 |
0.8230 |
0.0062 |
0.8468 |
0.7838 |
0.0252 |
0.7586 |
1 |
10 |
1.0000 |
0.9426 |
0.0066 |
0.9360 |
0.8990 |
0.0270 |
0.8720 |
11/8 |
9 |
1.1250 |
1.0608 |
0.0069 |
1.0539 |
1.0120 |
0.0292 |
0.9828 |
11/4 |
9 |
1.2500 |
1.1861 |
0.0072 |
1.1789 |
1.1370 |
0.0292 |
1.1078 |
13/8 |
8 |
1.3750 |
1.3025 |
0.0075 |
1.2950 |
1.2470 |
0.0320 |
1.2150 |
|
|
|
|
|
|
|
|
|
11/2 |
8 |
1.5000 |
1.4277 |
0.0077 |
1.4200 |
1.3720 |
0.0320 |
1.3400 |
15/8 |
8 |
1.6250 |
1.5529 |
0.0079 |
1.5450 |
1.4970 |
0.0320 |
1.4650 |
13/4 |
7 |
1.7500 |
1.6668 |
0.0083 |
1.6585 |
1.6026 |
0.0356 |
1.5670 |
|
|
|
|
|
|
|
|
|
2 |
7 |
2.0000 |
1.9172 |
0.0087 |
1.9085 |
1.8526 |
0.0356 |
1.8170 |
21/4 |
6 |
2.2500 |
2.1525 |
0.0092 |
2.1433 |
2.0769 |
0.0403 |
2.0366 |
21/2 |
6 |
2.5000 |
2.4028 |
0.0095 |
2.3933 |
2.3269 |
0.0403 |
2.2866 |
|
|
|
|
|
|
|
|
|
23/4 |
6 |
2.7500 |
2.6531 |
0.0098 |
2.6433 |
2.5769 |
0.0403 |
2.5366 |
3 |
5 |
3.0000 |
2.8822 |
0.0103 |
2.8719 |
2.7908 |
0.0470 |
2.7438 |
细牙、中等级外螺纹的公差和极限尺寸
细牙、中等级外螺纹的公差和极限尺寸 in |
||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(a)公称直径小于和等于3/4in |
||||||||||||||||||||||
公称直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||||||||||||||
不镀或镀前 |
镀后 |
不镀或镀前 |
镀后 |
不镀或镀前 |
镀后 |
|||||||||||||||||
max |
公差 |
min |
max |
max |
公差 |
min |
max |
max |
公差 |
min |
max |
|||||||||||
3/16 |
32 |
0.1864 |
0.0051 |
0.1813 |
0.1875 |
0.1664 |
0.0033 |
0.1631 |
0.1675 |
0.1464 |
0.0068 |
0.1396 |
0.1475 |
|||||||||
7/32 |
28 |
0.2177 |
0.0055 |
0.2122 |
0.2188 |
0.1948 |
0.0036 |
0.1912 |
0.1959 |
0.1719 |
0.0074 |
0.1645 |
0.1730 |
|||||||||
1/4 |
26 |
0.2489 |
0.0057 |
0.2432 |
0.2500 |
0.2243 |
0.0037 |
0.2206 |
0.2254 |
0.1997 |
0.0076 |
0.1921 |
0.2008 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
9/32 |
26 |
0.2800 |
0.0059 |
0.2741 |
0.2812 |
0.2554 |
0.0039 |
0.2515 |
0.2566 |
0.2308 |
0.0078 |
0.2230 |
0.2320 |
|||||||||
5/16 |
22 |
0.3113 |
0.0062 |
0.3051 |
0.3125 |
0.2822 |
0.0041 |
0.2781 |
0.2834 |
0.2531 |
0.0084 |
0.2447 |
0.2543 |
|||||||||
3/8 |
20 |
0.3737 |
0.0066 |
0.3671 |
0.3750 |
0.3417 |
0.0044 |
0.3373 |
0.3430 |
0.3097 |
0.0089 |
0.3008 |
0.3110 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
7/16 |
18 |
0.4361 |
0.0071 |
0.4290 |
0.4375 |
0.4005 |
0.0047 |
0.3958 |
0.4019 |
0.3649 |
0.0094 |
0.3555 |
0.3663 |
|||||||||
1/2 |
16 |
0.4985 |
0.0075 |
0.4910 |
0.5000 |
0.4585 |
0.0050 |
0.4535 |
0.4600 |
0.4185 |
0.0100 |
0.4085 |
0.4200 |
|||||||||
9/16 |
16 |
0.5610 |
0.0077 |
0.5533 |
0.5625 |
0.5210 |
0.0052 |
0.5158 |
0.5225 |
0.4810 |
0.0102 |
0.4708 |
0.4825 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
5/8 |
14 |
0.6234 |
0.0081 |
0.6153 |
0.6250 |
0.5777 |
0.0054 |
0.5793 |
0.5793 |
0.5320 |
0.0107 |
0.5213 |
0.5336 |
|||||||||
11/16 |
14 |
0.6858 |
0.0083 |
0.6775 |
0.6875 |
0.6401 |
0.0056 |
0.6418 |
0.6418 |
0.5944 |
0.0109 |
0.5835 |
0.5961 |
|||||||||
3/4 |
12 |
0.7482 |
0.0088 |
0.7394 |
0.7500 |
0.6948 |
0.0059 |
0.6966 |
0.6966 |
0.6414 |
0.0117 |
0.6297 |
0.6432 |
|||||||||
(b)公称直径大于3/4in |
||||||||||||||||||||||
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||||||||||||||
max |
公差 |
min |
max |
公差 |
min |
max |
公差 |
min |
||||||||||||||
7/8 |
11 |
0.8750 |
0.0092 |
0.8658 |
0.8168 |
0.0062 |
0.8106 |
0.7586 |
0.0122 |
0.7464 |
||||||||||||
1 |
10 |
1.0000 |
0.0098 |
0.9902 |
0.9360 |
0.0066 |
0.9294 |
0.8720 |
0.0129 |
0.8591 |
||||||||||||
11/8 |
9 |
1.1250 |
0.0102 |
1.1148 |
1.0539 |
0.0069 |
1.0470 |
0.9828 |
0.0136 |
0.9692 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
11/4 |
9 |
1.2500 |
0.0105 |
1.2395 |
1.1789 |
0.0072 |
1.1717 |
1.1078 |
0.0139 |
1.0939 |
||||||||||||
13/8 |
8 |
1.3750 |
0.0110 |
1.3640 |
1.2950 |
0.0075 |
1.2875 |
1.2150 |
0.0146 |
1.2004 |
||||||||||||
11/2 |
8 |
1.5000 |
0.0112 |
1.4888 |
1.4200 |
0.0077 |
1.4123 |
1.3400 |
0.0148 |
1.3252 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
15/8 |
8 |
1.6250 |
0.0115 |
1.6135 |
1.5450 |
0.0079 |
1.5371 |
1.4650 |
0.0150 |
1.4500 |
||||||||||||
13/4 |
7 |
1.7500 |
0.0120 |
1.7380 |
1.6585 |
0.0083 |
1.6502 |
1.5670 |
0.0158 |
1.5512 |
||||||||||||
2 |
7 |
2.0000 |
0.0124 |
1.9876 |
1.9085 |
0.0087 |
1.8998 |
1.8170 |
0.0162 |
1.8008 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
21/4 |
6 |
2.2500 |
0.0132 |
2.2368 |
2.1433 |
0.0092 |
2.1341 |
2.0366 |
0.0173 |
2.0193 |
||||||||||||
21/2 |
6 |
2.5000 |
0.0136 |
2.4864 |
2.3933 |
0.0095 |
2.3838 |
2.2866 |
0.0177 |
2.2689 |
||||||||||||
23/4 |
6 |
2.7500 |
0.0139 |
2.7361 |
2.6433 |
0.0098 |
2.6335 |
2.5366 |
0.0180 |
2.5186 |
||||||||||||
3 |
5 |
3.0000 |
0.0148 |
2.9852 |
2.8719 |
0.0103 |
2.8616 |
2.7438 |
0.0193 |
2.7245 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
细牙、普通级内螺纹的公差和极限尺寸
细牙、普通级内螺纹的公差和极限尺寸 in |
||||||||
---|---|---|---|---|---|---|---|---|
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||
min |
max |
公差 |
min |
max |
公差 |
min |
||
3/16 |
32 |
0.1875 |
0.1725 |
0.0050 |
0.1675 |
0.1577 |
0.0102 |
0.1475 |
7/32 |
28 |
0.2188 |
0.2012 |
0.0053 |
0.1959 |
0.1841 |
0.0111 |
0.1730 |
1/4 |
26 |
0.2500 |
0.2310 |
0.0056 |
0.2254 |
0.2125 |
0.0117 |
0.2008 |
|
|
|
|
|
|
|
|
|
9/32 |
26 |
0.2812 |
0.2624 |
0.0058 |
0.2566 |
0.2437 |
0.0117 |
0.2320 |
5/16 |
22 |
0.3125 |
0.2896 |
0.0062 |
0.2834 |
0.2684 |
0.0141 |
0.2543 |
3/8 |
20 |
0.3750 |
0.3496 |
0.0066 |
0.3430 |
0.3280 |
0.0170 |
0.3110 |
|
|
|
|
|
|
|
|
|
7/16 |
18 |
0.4375 |
0.4089 |
0.0070 |
0.4019 |
0.3844 |
0.0181 |
0.3663 |
1/2 |
16 |
0.5000 |
0.4674 |
0.0074 |
0.4600 |
0.4395 |
0.0195 |
0.4200 |
9/16 |
16 |
0.5625 |
0.5302 |
0.0077 |
0.5225 |
0.5020 |
0.0195 |
0.4825 |
|
|
|
|
|
|
|
|
|
5/8 |
14 |
0.6250 |
0.5874 |
0.0081 |
0.5793 |
0.5549 |
0.0213 |
0.5336 |
11/16 |
14 |
0.6875 |
0.6502 |
0.0084 |
0.6418 |
0.6174 |
0.0213 |
0.5961 |
3/4 |
12 |
0.7500 |
0.7054 |
0.0088 |
0.6966 |
0.6669 |
0.0237 |
0.6432 |
|
|
|
|
|
|
|
|
|
7/8 |
11 |
0.8750 |
0.8261 |
0.0093 |
0.8468 |
0.7838 |
0.0252 |
0.7586 |
1 |
10 |
1.0000 |
0.9459 |
0.0099 |
0.9360 |
0.8990 |
0.0270 |
0.8720 |
|
|
|
|
|
|
|
|
|
11/8 |
9 |
1.1250 |
1.0643 |
0.0104 |
1.0539 |
1.0120 |
0.0292 |
0.9828 |
11/4 |
9 |
1.2500 |
1.1897 |
0.0108 |
1.1789 |
1.1370 |
0.0292 |
1.1078 |
13/8 |
8 |
1.3750 |
1.3063 |
0.0113 |
1.2950 |
1.2470 |
0.0320 |
1.2150 |
|
|
|
|
|
|
|
|
|
11/2 |
8 |
1.5000 |
1.4316 |
0.0116 |
1.4200 |
1.3720 |
0.0320 |
1.3400 |
15/8 |
8 |
1.6250 |
1.5569 |
0.0119 |
1.5450 |
1.4970 |
0.0320 |
1.4650 |
13/4 |
7 |
1.7500 |
1.6709 |
0.0124 |
1.6585 |
1.6026 |
0.0356 |
1.5670 |
|
|
|
|
|
|
|
|
|
2 |
7 |
2.0000 |
1.9215 |
0.0130 |
1.9085 |
1.8526 |
0.0356 |
1.8170 |
21/4 |
6 |
2.2500 |
2.1570 |
0.0137 |
2.1433 |
2.0769 |
0.0403 |
2.0366 |
21/2 |
6 |
2.5000 |
2.4075 |
0.0142 |
2.3933 |
2.3269 |
0.0403 |
2.2866 |
|
|
|
|
|
|
|
|
|
23/4 |
6 |
2.7500 |
2.6580 |
0.0147 |
2.6433 |
2.5769 |
0.0403 |
2.5366 |
3 |
5 |
3.0000 |
2.8874 |
0.0155 |
2.8719 |
2.7908 |
0.0470 |
2.7438 |
细牙、自由级外螺纹的公差和极限尺寸
细牙、自由级外螺纹的公差和极限尺寸 in |
||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(a)公称直径小于和等于3/4in |
||||||||||||||||||||||
公称直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||||||||||||||
不镀或镀前 |
镀后 |
不镀或镀前 |
镀后 |
不镀或镀前 |
镀后 |
|||||||||||||||||
max |
公差 |
min |
max |
max |
公差 |
min |
max |
max |
公差 |
min |
max |
|||||||||||
3/16 |
32 |
0.1864 |
0.0068 |
0.1796 |
0.1875 |
0.1664 |
0.0050 |
0.1614 |
0.1675 |
0.1464 |
0.0085 |
0.1379 |
0.1475 |
|||||||||
7/32 |
28 |
0.2177 |
0.0072 |
0.2105 |
0.2188 |
0.1948 |
0.0053 |
0.1895 |
0.1959 |
0.1719 |
0.0091 |
0.1628 |
0.1730 |
|||||||||
1/4 |
26 |
0.2489 |
0.0076 |
0.2413 |
0.2500 |
0.2243 |
0.0056 |
0.2187 |
0.2254 |
0.1997 |
0.0095 |
0.1902 |
0.2008 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
9/32 |
26 |
0.2800 |
0.0078 |
0.2722 |
0.2812 |
0.2554 |
0.0058 |
0.2496 |
0.2566 |
0.2308 |
0.0097 |
0.2211 |
0.2320 |
|||||||||
5/16 |
22 |
0.3113 |
0.0083 |
0.3030 |
0.3125 |
0.2822 |
0.0062 |
0.2760 |
0.2834 |
0.2531 |
0.0105 |
0.2426 |
0.2543 |
|||||||||
3/8 |
20 |
0.3737 |
0.0088 |
0.3649 |
0.3750 |
0.3417 |
0.0066 |
0.3351 |
0.3430 |
0.3097 |
0.0111 |
0.2986 |
0.3110 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
7/16 |
18 |
0.4361 |
0.0094 |
0.4267 |
0.4375 |
0.4005 |
0.0070 |
0.3935 |
0.4019 |
0.3649 |
0.0117 |
0.3532 |
0.3663 |
|||||||||
1/2 |
16 |
0.4985 |
0.0099 |
0.4886 |
0.5000 |
0.4585 |
0.0074 |
0.4511 |
0.4600 |
0.4185 |
0.0124 |
0.4061 |
0.4200 |
|||||||||
9/16 |
16 |
0.5610 |
0.0102 |
0.5508 |
0.5625 |
0.5210 |
0.0077 |
0.5133 |
0.5225 |
0.4810 |
0.0127 |
0.4683 |
0.4825 |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
5/8 |
14 |
0.6234 |
0.0108 |
0.6126 |
0.6250 |
0.5777 |
0.0081 |
0.5696 |
0.5793 |
0.5320 |
0.0134 |
0.5186 |
0.5336 |
|||||||||
11/16 |
14 |
0.6858 |
0.0111 |
0.6747 |
0.6875 |
0.6401 |
0.0084 |
0.6317 |
0.6418 |
0.5944 |
0.0137 |
0.5807 |
0.5961 |
|||||||||
3/4 |
12 |
0.7482 |
0.0117 |
0.7365 |
0.7500 |
0.6948 |
0.0088 |
0.6860 |
0.6966 |
0.6414 |
0.0146 |
0.6268 |
0.6432 |
|||||||||
(b)公称直径大于3/4in |
||||||||||||||||||||||
公称 直径 |
牙数 |
大 径 |
中 径 |
小 径 |
||||||||||||||||||
max |
公差 |
min |
max |
公差 |
min |
max |
公差 |
min |
||||||||||||||
7/8 |
11 |
0.8750 |
0.0123 |
0.8627 |
0.8168 |
0.0093 |
0.8075 |
0.7586 |
0.0153 |
0.7433 |
||||||||||||
1 |
10 |
1.0000 |
0.0131 |
0.9869 |
0.9360 |
0.0099 |
0.9261 |
0.8720 |
0.0162 |
0.8558 |
||||||||||||
11/8 |
9 |
1.1250 |
0.0137 |
1.1113 |
1.0539 |
0.0104 |
1.0435 |
0.9828 |
0.0171 |
0.9657 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
11/4 |
9 |
1.2500 |
0.0141 |
1.2359 |
1.1789 |
0.0108 |
1.1681 |
1.1078 |
0.0175 |
1.0903 |
||||||||||||
13/8 |
8 |
1.3750 |
0.0148 |
1.3602 |
1.2950 |
0.0113 |
1.2837 |
1.2150 |
0.0184 |
1.1966 |
||||||||||||
11/2 |
8 |
1.5000 |
0.0151 |
1.4849 |
1.4200 |
0.0116 |
1.4084 |
1.3400 |
0.0187 |
1.3213 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
15/8 |
8 |
1.6250 |
0.0155 |
1.6095 |
1.5450 |
0.0119 |
1.5331 |
1.4650 |
0.0190 |
1.4460 |
||||||||||||
13/4 |
7 |
1.7500 |
0.0162 |
1.7338 |
1.6585 |
0.0124 |
1.6461 |
1.5670 |
0.0200 |
1.5470 |
||||||||||||
2 |
7 |
2.0000 |
0.0168 |
1.9832 |
1.9085 |
0.0130 |
1.8955 |
1.8170 |
0.0205 |
1.7932 |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
21/4 |
6 |
2.2500 |
0.0178 |
2.2322 |
2.1433 |
0.0137 |
2.1296 |
2.0366 |
0.0219 |
2.0147 |
||||||||||||
21/2 |
6 |
2.5000 |
0.0183 |
2.4817 |
2.3933 |
0.0142 |
2.3791 |
2.2866 |
0.0224 |
2.2642 |
||||||||||||
23/4 |
6 |
2.7500 |
0.0188 |
2.7312 |
2.6433 |
0.0147 |
2.6286 |
2.5366 |
0.0229 |
2.5137 |
||||||||||||
3 |
5 |
3.0000 |
0.0199 |
2.9801 |
2.8719 |
0.0155 |
2.8564 |
2.7438 |
0.0244 |
2.7194 |
选择组合系列、中等和自由级外螺纹的容隙值
选择组合系列、中等和自由级外螺纹的容隙值 0.001in |
|||||
---|---|---|---|---|---|
牙数 |
在大径、中径和小径上的容隙 |
||||
公称直径 |
> |
1/8 |
1/4 |
1/2 |
|
≤ |
1/4 |
1/2 |
3/4 |
||
40,36 |
|
1.1 |
1.2 |
1.2 |
|
32,28 |
|
1.2 |
1.3 |
1.3 |
|
26,24 |
|
1.2 |
1.3 |
1.4 |
|
|
|
|
|
|
|
20 |
|
|
1.4 |
1.5 |
|
18,16 |
|
|
1.5 |
1.6 |
|
14,12 |
|
|
|
1.8 |
选择组合系列、紧密级外螺纹的公差
选择组合系列、紧密级外螺纹的公差 0.001in |
||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
牙数 |
中 径 公 差 |
大径 公差 |
小径 公差 |
|||||||||||||
公称 直径 |
> |
1/8 |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
在中径公 差再加上 下列数据 |
||
≤ |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
20 |
||||
40,36 |
|
2.4 |
2.6 |
2.8 |
3.0 |
3.2 |
|
|
|
|
|
|
|
1.7 |
2.2 |
|
32,28 |
2.5 |
2.7 |
2.9 |
3.1 |
3.3 |
|
|
|
|
|
|
|
1.9 |
2.5 |
||
26,24 |
2.8 |
3.0 |
3.1 |
3.3 |
3.6 |
3.8 |
|
|
|
|
|
|
2.0 |
2.7 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
20 |
|
3.0 |
3.2 |
3.4 |
3.6 |
3.9 |
|
|
|
|
|
|
2.2 |
2.9 |
||
18,16 |
|
3.4 |
3.6 |
3.7 |
4.0 |
4.2 |
4.4 |
4.7 |
|
|
|
|
2.5 |
3.2 |
||
14,12 |
|
|
4.0 |
4.2 |
4.4 |
4.6 |
4.9 |
5.1 |
|
|
|
|
2.9 |
3.8 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
11,10 |
|
|
|
4.3 |
4.5 |
4.7 |
4.9 |
5.2 |
5.5 |
|
|
|
3.2 |
4.1 |
||
8 |
|
|
|
4.7 |
5.0 |
5.2 |
5.4 |
5.7 |
6.0 |
6.2 |
|
|
3.5 |
4.6 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
6 |
|
|
|
|
5.6 |
5.8 |
6.0 |
6.3 |
6.6 |
6.8 |
7.1 |
|
4.1 |
5.3 |
||
4 |
|
|
|
|
|
6.6 |
6.9 |
7.1 |
7.4 |
7.7 |
8.0 |
8.3 |
5.0 |
6.5 |
选择组合系列、中等级内螺纹的公差
选择组合系列、中等级内螺纹的公差 0.001in |
|||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
牙数 |
中 径 公 差 |
小径公差 |
|||||||||||||
公称 直径 |
> |
1/8 |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
公差总量 |
|
≤ |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
20 |
|||
40,36 |
|
3.7 |
4.0 |
4.2 |
4.5 |
4.9 |
|
|
|
|
|
|
|
9.6 |
|
32,28 |
3.8 |
4.1 |
4.3 |
4.6 |
5.0 |
|
|
|
|
|
|
|
11.1 |
||
26,24 |
4.1 |
4.4 |
4.7 |
5.0 |
5.4 |
5.7 |
|
|
|
|
|
|
13.3 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
20 |
|
4.5 |
4.8 |
5.1 |
5.5 |
5.8 |
|
|
|
|
|
|
17.0 |
||
18,16 |
|
5.1 |
5.3 |
5.6 |
6.0 |
6.3 |
6.7 |
7.0 |
|
|
|
|
19.5 |
||
14,12 |
|
|
6.0 |
6.2 |
6.6 |
7.0 |
7.3 |
7.7 |
|
|
|
|
23.7 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
11,10 |
|
|
|
6.4 |
6.7 |
7.1 |
7.4 |
7.8 |
8.2 |
|
|
|
27.0 |
||
8 |
|
|
|
7.1 |
7.5 |
7.8 |
8.2 |
8.5 |
8.9 |
9.4 |
|
|
32.0 |
||
6 |
|
|
|
|
8.4 |
8.7 |
9.0 |
9.4 |
9.8 |
10.2 |
10.7 |
|
40.3 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
4 |
|
|
|
|
|
10.0 |
10.3 |
10.7 |
11.1 |
11.5 |
11.9 |
12.4 |
57.0 |
选择组合系列、中等级外螺纹的公差
选择组合系列、中等级外螺纹的公差 0.001in |
||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
牙数 |
中 径 公 差 |
大径 公差 |
小径 公差 |
|||||||||||||
公称 直径 |
> |
1/8 |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
在中径公 差再加上 下列数据 |
||
≤ |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
20 |
||||
40,36 |
|
3.7 |
4.0 |
4.2 |
4.5 |
4.9 |
|
|
|
|
|
|
|
1.7 |
3.3 |
|
32,28 |
3.8 |
4.1 |
4.3 |
4.6 |
5.0 |
|
|
|
|
|
|
|
1.9 |
3.8 |
||
26,24 |
4.1 |
4.4 |
4.7 |
5.0 |
5.4 |
5.7 |
|
|
|
|
|
|
2.0 |
4.1 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
20 |
|
4.5 |
4.8 |
5.1 |
5.5 |
5.8 |
|
|
|
|
|
|
2.2 |
4.5 |
||
18,16 |
|
5.1 |
5.3 |
5.6 |
6.0 |
6.3 |
6.7 |
7.0 |
|
|
|
|
2.5 |
5.0 |
||
14,12 |
|
|
6.0 |
6.2 |
6.6 |
7.0 |
7.3 |
7.7 |
|
|
|
|
2.9 |
5.8 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
11,10 |
|
|
|
6.4 |
6.7 |
7.1 |
7.4 |
7.8 |
8.2 |
|
|
|
3.2 |
6.3 |
||
8 |
|
|
|
7.1 |
7.5 |
7.8 |
8.2 |
8.5 |
8.9 |
9.4 |
|
|
3.5 |
7.1 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
6 |
|
|
|
|
8.4 |
8.7 |
9.0 |
9.4 |
9.8 |
10.2 |
10.7 |
|
4.1 |
8.2 |
||
4 |
|
|
|
|
|
10.0 |
10.3 |
10.7 |
11.1 |
11.5 |
11.9 |
12.4 |
5.0 |
10.0 |
选择组合系列、普通级内螺纹的公差
选择组合系列、普通级内螺纹的公差 0.001in |
|||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
牙数 |
中 径 公 差 |
小径公差 |
|||||||||||||
公称 直径 |
> |
1/8 |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
公差总量 |
|
≤ |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
20 |
|||
40,36 |
|
5.6 |
6.0 |
6.3 |
6.8 |
7.3 |
|
|
|
|
|
|
|
9.6 |
|
32,28 |
5.7 |
6.2 |
6.5 |
6.9 |
7.5 |
|
|
|
|
|
|
|
11.1 |
||
26,24 |
6.2 |
6.7 |
7.1 |
7.5 |
8.0 |
8.6 |
|
|
|
|
|
|
13.3 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
20 |
|
6.8 |
7.2 |
7.7 |
8.2 |
8.7 |
|
|
|
|
|
|
17.0 |
||
18,16 |
|
7.6 |
8.0 |
8.4 |
9.0 |
9.5 |
10.0 |
10.6 |
|
|
|
|
19.5 |
||
14,12 |
|
|
8.9 |
9.4 |
9.9 |
10.4 |
10.9 |
11.5 |
|
|
|
|
23.7 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
11,10 |
|
|
|
9.6 |
10.1 |
10.7 |
11.1 |
11.7 |
12.3 |
|
|
|
27.0 |
||
8 |
|
|
|
10.7 |
11.2 |
11.8 |
12.2 |
12.8 |
13.4 |
14.0 |
|
|
32.0 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
6 |
|
|
|
|
12.5 |
13.1 |
13.6 |
14.1 |
14.8 |
15.4 |
16.1 |
|
40.3 |
||
4 |
|
|
|
|
|
14.9 |
15.4 |
16.0 |
16.6 |
17.2 |
17.9 |
18.7 |
57.0 |
选择组合系列、自由级外螺纹的公差
选择组合系列、自由级外螺纹的公差 0.001in |
||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
牙数 |
中 径 公 差 |
大径 公差 |
小径 公差 |
|||||||||||||
公称 直径 |
> |
1/8 |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
在中径公 差再加上 下列数据 |
||
≤ |
1/4 |
1/2 |
3/4 |
11/4 |
2 |
3 |
4 |
6 |
8 |
11 |
15 |
20 |
||||
26,24 |
|
6.2 |
6.7 |
7.1 |
7.5 |
8.0 |
8.6 |
|
|
|
|
|
|
2.0 |
4.1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.2 |
4.5 |
||
20 |
|
6.8 |
7.2 |
7.7 |
8.2 |
8.7 |
|
|
|
|
|
|
|
|
||
18,16 |
|
7.6 |
8.0 |
8.4 |
9.0 |
9.5 |
10.0 |
10.6 |
|
|
|
|
2.5 |
5.0 |
||
14,12 |
|
|
8.6 |
9.4 |
9.9 |
10.4 |
10.9 |
11.5 |
|
|
|
|
2.9 |
5.8 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
11,10 |
|
|
|
9.6 |
10.1 |
10.7 |
11.1 |
11.7 |
12.3 |
|
|
|
3.2 |
6.3 |
||
8 |
|
|
|
10.7 |
11.2 |
11.8 |
12.2 |
12.8 |
13.4 |
14.0 |
|
|
3.5 |
7.1 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
6 |
|
|
|
|
12.5 |
13.1 |
13.6 |
14.1 |
14.8 |
15.4 |
16.1 |
|
4.1 |
8.2 |
||
4 |
|
|
|
|
|
14.9 |
15.4 |
16.0 |
16.6 |
17.2 |
17.9 |
18.7 |
5.0 |
10.0 |