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全国咨询热线：
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单位：英寸（inch）
| (inch) | dc | d min | h min | h max | a |
|---|---|---|---|---|---|
| 1/4 | 0.625 | 0.281 | 0.051 | 0.080 | 0.21875 |
| 5/16 | 0.688 | 0.344 | 0.051 | 0.080 | 0.28125 |
| 3/8 | 0.813 | 0.406 | 0.051 | 0.080 | 0.34375 |
| 7/16 | 0.922 | 0.469 | 0.051 | 0.080 | 0.40625 |
| 1/2 | 1.063 | 0.531 | 0.097 | 0.177 | 0.4375 |
| 5/8 | 1.313 | 0.688 | 0.122 | 0.177 | 0.5625 |
| 3/4 | 1.469 | 0.813 | 0.122 | 0.177 | 0.65625 |
| 7/8 | 1.750 | 0.938 | 0.136 | 0.177 | 0.78125 |
| 1 | 2.000 | 1.125 | 0.136 | 0.177 | 0.875 |
| 1-1/8 | 2.250 | 1.250 | 0.136 | 0.177 | 1 |
| 1-1/4 | 2.500 | 1.375 | 0.136 | 0.177 | 1.09375 |
| 1-3/8 | 2.750 | 1.500 | 0.136 | 0.177 | 1.21875 |
| 1-1/2 | 3.000 | 1.625 | 0.136 | 0.177 | 1.3125 |
| 1-3/4 | 3.375 | 1.875 | 0.178 | 0.280 | 1.53125 |
| 2 | 3.750 | 2.125 | 0.178 | 0.280 | 1.75 |
| 2-1/4 | 4.000 | 2.375 | 0.240 | 0.340 | 2 |
| 2-1/2 | 4.500 | 2.625 | 0.240 | 0.340 | 2.1875 |
| 2-3/4 | 5.000 | 2.875 | 0.240 | 0.340 | 2.40625 |
| 3 | 5.500 | 3.125 | 0.240 | 0.340 | 2.625 |
| 3-1/4 | 6.000 | 3.375 | 0.240 | 0.340 | 2.875 |
| 3-1/2 | 6.500 | 3.625 | 0.240 | 0.340 | 3.0625 |
| 3-3/4 | 7.000 | 3.875 | 0.240 | 0.340 | 3.3125 |
| 4 | 7.500 | 4.125 | 0.240 | 0.340 | 3.5 |
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