| 扣環 | 截面 | 孔徑 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 內徑 | 公差 | 厚度 | 公差 | 最大 | 公差 | 最小 | 公差 | 值 | 公差 |
| ISTW | inch | 1.041 | 1.026~1.051 | 0.05 | 0.048~0.052 | 0.15 | ±0.006 | 0.075 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.098 | 1.083~1.108 | 0.05 | 0.048~0.052 | 0.153 | ±0.006 | 0.076 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.156 | 1.141~1.166 | 0.05 | 0.048~0.052 | 0.157 | ±0.006 | 0.079 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.214 | 1.199~1.224 | 0.05 | 0.048~0.052 | 0.161 | ±0.006 | 0.08 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.272 | 1.257~1.282 | 0.05 | 0.048~0.052 | 0.165 | ±0.006 | 0.082 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.333 | 1.318~1.343 | 0.05 | 0.048~0.052 | 0.169 | ±0.006 | 0.085 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.387 | 1.372~1.397 | 0.05 | 0.048~0.052 | 0.173 | ±0.006 | 0.086 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.446 | 1.426~1.459 | 0.062 | 0.059~0.065 | 0.178 | ±0.006 | 0.089 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.503 | 1.483~1.516 | 0.062 | 0.059~0.065 | 0.183 | ±0.006 | 0.092 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.637 | 1.617~1.650 | 0.062 | 0.059~0.065 | 0.196 | ±0.006 | 0.098 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.675 | 1.655~1.688 | 0.062 | 0.059~0.065 | 0.199 | ±0.006 | 0.1 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.819 | 1.799~1.832 | 0.062 | 0.059~0.065 | 0.212 | ±0.006 | 0.106 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.85 | 1.830~1.863 | 0.062 | 0.059~0.065 | 0.216 | ±0.006 | 0.108 | ±0.006 | 0.078 | +0.015,-0.002 | |
| ISTW | inch | 1.993 | 1.968~2.008 | 0.078 | 0.075~0.081 | 0.229 | ±0.007 | 0.117 | ±0.007 | 0.12 | +0.015,-0.002 | |
| ISTW | inch | 2.313 | 2.288~2.328 | 0.078 | 0.075~0.081 | 0.25 | ±0.007 | 0.13 | ±0.007 | 0.12 | +0.015,-0.002 | |