|
细牙、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 |
||||||
|
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 |